Test for the names of alkanes. Alkanes test. Natural gas contains mainly
Test work in chemistry Alkanes with answers for students in grade 10. The test consists of 3 options, each with 6 tasks.
Option 1
1. Alkane Structural Formula:
2. Isomers are:
1) butane and pentane
2) 2-methylbutane and 2,2-dimethylpropane
3) 1,3-dimethylpentane and 2-methylpentane
4) 3,3-dimethylpentane and 2,2-dimethylbutane
3.
A. With an increase in the relative molecular weight of alkanes, the melting and boiling points increase.
B. Methane has a characteristic odor.
1) only A is true
2) only B is true
3) both judgments are true
4) both judgments are wrong
4. In the reaction equation for the combustion of pentane, the coefficient in front of the oxygen formula is:
1) 2
2) 4
3) 6
4) 8
5. Syngas is produced by a reaction between:
1) methane and oxygen
2) methane and chlorine
3) methane and water
4) chloromethane and water
6. Calculate the mass of aluminum carbide Al 4 C 3, which will be required to obtain 112 L (standard) methane, if the volume fraction of the reaction product yield is 80% of the theoretically possible.
Option 2
1. Alkane Molecular Formula:
1) C 4 H 10
2) C 3 H 4
3) C 6 H 6
4) C 5 H 10
2. Substances of the same composition and properties are depicted by structural formulas:
3. Propane:
1) has no homologues with fewer carbon atoms
2) is liquid
3) is a gas at room temperature
4) has a lower relative molecular weight than air
5) has no isomers
6) dissolves in water
4. When 1 mol of methane interacts with 3 mol of chlorine, the following is formed:
1) 1 mol of trichloromethane
2) 1 mol of trichloromethane and 3 mol of hydrogen chloride
3) 1 mol of trichloromethane and 2 mol of hydrogen chloride
4) 3 mol of trichloromethane and 3 mol of hydrogen chloride
5. Ethane dehydrogenation refers to the reactions:
1) endothermic
2) decomposition
3) accession
4) catalytic
5) exothermic
6) non-catalytic
6. Determine the molecular formula of the saturated hydrocarbon, the interaction of 1.74 g of which with bromine forms 4.11 g of the monobromo derivative.
Option 3
1. Alkane Structural Formula:
2. Homologues are substances whose names are:
1) 2-methylpentane and 2-methylbutane
2) 2-methylpropane and butane
3) 2,2-dimethylbutane and 2-methylpentane
4) butane and cyclobutane
3. Are the following judgments about the physical properties of alkanes correct?
A. All alkanes are gaseous or liquid substances.
B. Alkanes dissolve well in water.
1) only A is true
2) only B is true
3) both judgments are true
4) both judgments are wrong
4. With the decomposition of methane not formed:
1) hydrogen
2) ethylene
3) acetylene
4) soot
5. Ethane is characterized by reactions:
1) with hydrogen
2) with oxygen
3) with sodium hydroxide solution
5) with bromine
6) with concentrated sulfuric acid
6. Establish the molecular formula of a dibromoalkane containing 85.11% bromine.
Answers to the test for the chemistry of Alkanes
Option 1
1. 4
2. 2
3. 1
4. 4
5. 3
6. 299,52
Option 2
1. 1
2. 3
3. 35
4. 2
5. 124
6.C 4 H 10
Option 3
1. 1
2. 1
3. 4
4. 2
5. 25
6.C 2 H 4 Br 2
Test on the topic: "Alkanes"
2 lessons with 14 questions
1. The first representative of a series of alkanes is called:
a) butane; b) propane; c) octane; d) methane.
2. General formula for alkanes:
a) C n H 2 n ; b) C n H 2 n +2; c) C n H 2 n –2; d) C n H n .
3. Carbon atoms in alkanes are in the state:
and) sp -hybridization;
b) pp -hybridization;
in) sp 3-hybridization;
d) in a non-hybrid state.
4. The bond angle in alkanes is:
a) 109 ° 28 "; b) 180 °; c) 90 °; d) 270 °.
5. The methane molecule has a structure:
a) octahedral; b) planar;
c) tetrahedral; d) hexagonal.
6. Bonds in the alkane molecule:
and). double; b). triple;
in). one and a half; d). single.
7. Each subsequent representative of the homologous series of organic compounds differs from the previous one by a homologous difference equal to:
a) CH; b) CH 3; c) CH 4; d) CH 2.
8. Natural gas contains mainly:
and). propane; b). butane; in). methane; d). hydrogen.
9 . The radical is:
and). a group of atoms with unpaired electrons;
b). a group of atoms other than methane by - CH 2;
in). a group of atoms having a positive charge;
d). a group of atoms called functional.
10. To give a name to a radical, it is necessary to replace the -ane in the name of the alkane with:
a) -in; b) -il; c) -en; d) -diene.
11. Which of the following substances are isomers?
1) CH 3 - (CH 2) 5 –CH 3; 2) CH 3 –CH (CH 3) - C (CH 3) 2 –CH 3;
3) CH 3 –C (CH 3) 2 –CH 3; 4) CH 3 –CH (CH 3) - CH (CH 3) –CH 3.
a) 1 and 2; b) 1 and 4; c) 2 and 4; d) 3 and 4.
12. What hydrocarbon is a homologue of butane:
and). ethylene; b). benzene; in). pentane; d). isobutane.
13. The substance CH 3 -CH (CH 3) - CH (CH 3) -CH 3 is called:
a) 2,3,4-trimethyloctane; b) n -hexane;
c) 2,3-dimethylbutane; d) 3,4-dimethylpentane.
14. The seventh representative of a series of alkanes is called: a) octane; b) nonane;
c) dean; d) heptane.
15 . Alkanes are characterized by isomerism:
and). multiple link positions;
b). carbon skeleton;
in). geometric;
d). functional group positions
16. To name a branched hydrocarbon, you first need to:
a) choose the longest chain of carbon atoms;
b) indicate the names of the radicals;
c) indicate belonging to the class of substances;
d) indicate the location of the radicals.
17. The substances CH 3 -CH 3 and CH 3 -CH 2 -CH 3 are:
a) isomers; b) homologues;
c) allotropic modifications;
d) radicals.
18. Gaseous alkanes are:
a) CH 4, C 4 H 10, C 10 H 22;
b) C 3 H 8, C 2 H 6, C 4 H 10;
c) C 6 H 14, C 5 H 12, C 5 H 10;
d) C 7 H 16, C 6 H 14, C 10 H 22.
19. Reaction
2CH 3 I + 2Na \u003d 2NaI + C 2 H 6
bears the name:
a) N.N. Zinina; b) A.M. Butlerova;
c) S.A. Würz; d) D.I. Mendeleev.
20. Pentane Formula:
a) C 4 H 10; b) C 5 H 10; c) C 5 H 12; d) C 10 H 22.
21. Formula C 2 H 5 corresponds to:
a) the ethyl radical; b) the dean;
c) ethane; d) butane.
22. The interaction of methane with chlorine is a reaction:
a) decomposition; b) connections;
c) exchange; d) substitution.
23. Carbon tetrachloride formula:
a) CCl 4; b) CHCl 3; c) CH 2 Cl 2; d) CH 3 Cl.
24. Select a free radical reaction from the following reactions:
a) CH 4 → C + 2H 2;
b) C 2 H 5 OH + HBr → C 2 H 5 Br + H 2 O;
c) CH 4 + Br 2 → C H 3 Br + H Br;
d) CH 4 + H 2 O → CO + 3H 2.
25. Methane monochlorination product:
a) CH 2 Cl 2; b) CHCl 3; c) CCl 4; d) CH 3 Cl.
26. During the thermal decomposition of methane while heating it up to 1500 ° C and cooling with water, the following forms are formed:
and). C and H 2; b). C 2 H 2 and H 2; in). CO 2 and H 2; d). CO and H 2
27. For alkanes not typical reaction :
and). polymerization; b). isomerization;
in). thermal decomposition; d). replacement?
28. The sum of all the coefficients in the methane combustion reaction equation is:
and). 2; b) .4; at 6; d). 8?
Evaluation criteria:
14 points "five"
11- 13 points "four"
7-10 points "3"
STATE BUDGET EDUCATIONAL INSTITUTION
SECONDARY EDUCATIONAL SCHOOL № 336
NEVSKY DISTRICT OF SAINT PETERSBURG
Alkanes, Cycloalkanes
development of test control in chemistry
for grade 10
Developed by:
Samokhvalov Andrey Sergeevich ,
Biology and Chemistry Teacher
GBOU Secondary School No. 336 of the Nevsky District
St. Petersburg
2015 year
TEST CONTROL ON TOPICS: "ALKANES", "CYCLOALCANES"
one). Bonds in the alkane molecule:
and). double; b). triple; in). one and a half; d). single?
2). Indicate the molecular formula of ethane:
and). C 8 H 18; b). C 6 H 6; in). C 6 H 5 CH 3; d). C 2 H 6?
3). Indicate the formula of a substance belonging to the class "Alkanes":
and). C 4 H 10; b). C 6 H 12; in). C 6 H 6; d). C 13 H 26?
four). The general formula for the homologous series of alkanes:
and). C n H 2 n; b). C n H 2 n - 2; in). C n H 2 n - 6; d). C n H 2 n + 2?
five). Natural gas contains mainly:
and). propane; b). butane; in). methane; d). hydrogen?
6). What hydrocarbon is a homologue of butane:
and). ethylene; b). benzene; in). pentane; d). isobutane?
7). The methane molecule has the form:
and). cone; b). Cuba; in). pyramids; d). tetrahedron?
8). Alkanes are characterized by hybridization:
and). sp 3; b). sp; in). sp 2; d). sp 4?
9). The angle between carbon atoms in alkane molecules is:
and). 120 °; b). 109 °; in). 90 °; d). 110 °?
ten). The radical is:
and). a group of atoms with unpaired electrons;
b). a group of atoms other than methane by - CH 2 -;
in). a group of atoms having a positive charge;
d). a group of atoms called functional?
eleven). Formulas of only alkanes are written in the following row:
and). C 3 H 6, C 2 H 4, C 6 H 14; b). C 4 H 10, C 2 H 6, C 3 H 8;
in). C 2 H 2, C 3 H 8, C 6 H 6; d). C 6 H 6, C 4 H 8, C 2 H 6?
12). The reaction that lengthens the carbon chain is:
and). the Wurtz reaction; b). Konovalov reaction;
in). alkane isomerization reaction; d). hydrogenation reaction of alkenes?
thirteen). During the thermal decomposition of methane while heating it up to 1500 ° C and cooling with water, the following forms are formed:
and). C and H 2; b). C 2 H 2 and H 2; in). CO 2 and H 2; d). CO and H 2?
14). Alkanes are characterized by isomerism: and). multiple link positions; b). carbon skeleton; in). geometric; d). the position of the functional group? 15). For alkanesnot typical reaction: and). polymerization; b). isomerization; in). thermal decomposition; d). replacement?
16). The molar mass of a cycloalkane containing 6 carbon atoms in one molecule is in g / mol:
AND). 70; b). 48; in). 86; d). 84?
17). For cyclohexane, the reaction is not typical:
and). joining; b). isomerization; in). substitution; d). burning?
eighteen). What is the relationship between alkanes and cycloalkanes:
and). ionic; b). covalent non-polar; in). hydrogen; d). covalent polar?
19). The sum of all the coefficients in the reaction equation for the combustion of cyclopropane is:
AND). eleven; b). 15; in). 23; d). 25?
20). When exposed to metal zinc (when heated) on 1, 5-dibromopentane get:
and). cyclohexane; b). pentane; in). methylcyclopentane; d). cyclopentane?
ANSWERS
CRITERION FOR EVALUATION OF THE CONTROL TEST
"5" - 17 - 19 CORRECT ANSWERS;
"4" - 14 - 16 CORRECT ANSWERS;
"3" - 9 - 13 CORRECT ANSWERS;
"2" - 8 AND LESS CORRECT ANSWERS.
BIBLIOGRAPHY
Anisimova K.A., Koltsova A.M. Chemistry tests for grades 8 - 11, Ivanovo: IPKiPPK, 2013. - 268 p.
Gara N.N., Zueva M.V. Collection of tasks for intermediate certification: 8 - 11 grades: A book for the teacher. - M .: Education, 2013 .-- 368 p., Ill.
Surovtseva R.P., Guzei L.S., Ostanniy N.I., Tatur A.O. Chemistry tests for grades 10 - 11: Study guide. - M .: Bustard, 2013 .-- 126 p., Ill.
Chunikhina L.L. 500 chemistry tests for grades 10-11 (for independent work at school and at home). - M .: Publishing house, 2012 .-- 86 p.
Testing by topic "Alkanes" option 1.
Part A.
A 1. General formula of the homologous series of alkanes:
A 2. The number of elements in the substance butane is equal to:
1. 1 2. 2 3. 3 4. 4
A 3. Homologues are:
1. Hexane and Hexanal. 2. Hexane and Hexene. 3. Butane and pentane. 4. Butane and pentyl.
1. Etana. 2. Propene. 3. Butadiene. 4. Pentina.
1. Hexane and butane. 2. Cyclobutane and cyclopropane. 3. Butane and 2-methylbutane. 4. Butane and 2-methylpropane.
1. Etina. 2. Isobutane. 3. Etena. 4. Cyclopentene.
A 7. The number of carbon atoms in 5.6 liters (standard) propane is equal to:
1. 5 . 1022 2. 1,5 . 1023 3. 0,1 . 1023 4. 4,5 . 1023
1. Isobutane. 2. Butadiene -1.3. 3. Propyne. 4. Benzene.
1. 1 2. 2,3 3. 3 4. 4,6
A 15. General formula of the homologous series of cycloalkanes:
1. Bromoethane. 2. Propanol. 3. 1,2 - dibromoethane. 4. 2,2,3,3 - tetramethylethane.
1. Propane. 2. Bhutan. 3. Ethane. 4. Ethylene.
A 18. The mass (kg) of carbon tetrachloride obtained from 64 kg of methane with a practical yield of 97.4% is:
1. 600 2. 300 3. 900 4. 1500
CH3 - CH - CH2 - CH3
1.2 - ethylpropane. 2. 3 - ethylpropane. 3.3 - methylpentane. 4.3 - methylbutane.
A 20. The mass of hydrocarbon (in grams) obtained by heating 48 g of 2 - bromobutane with 7.67 g of sodium is:
1. 10 2. 19 3. 38 4.76
Part B.
1. Hydrogenation reactions.
6. Combustion in air.
1. НСLO4 2. HNO2 3. C3H8 4. HBrO3 5. BCL3
In 4. Hydrolysis of aluminum carbide (АL4C3) produced methane with a volume of 67.2 liters (standard). The mass of the formed aluminum hydroxide is (in grams) ……
Name General formula
1. Pentane A CnH2n + 1
2. Butin B CnH2n + 2
3. Cyclopropane B CnH2n
4. Ethyl G CnH2n-2
Testing by topic "Alkanes" option 2.
Part A.
For each task in Part A, several answers are given, of which only one is correct. Choose the answer that is correct in your opinion. In the answer sheet, under the task number, put a cross in the box, the number of which corresponds to the number of the answer you have chosen.
A 1. General formula for the homologous series of cycloalkanes:
1. СnH2n 2. CnH2n + 2 3. CnH2n-2 4. CnH2n-6
A 2. The number of elements in the substance pentane is equal to:
1. 1 2. 2 3. 3 4. 4
A 3. Homologues are:
1. Hexane and Hexanal. 2. Propane and butane. 3. Bhutan and butene. 4. Butane and pentyl.
A 4. Substitution reactions are characteristic for:
1. Etena. 2. Propina. 3. Butadiene. 4. Pentane.
A 5. Structural isomers are:
1. Hexane and butane. 2. Cyclobutane and cyclopentane. 3. Butane and 2-methylbutane. 4. Pentane and 2 - methylbutane.
A 6. In the molecule of which substance there are no π-bonds:
1. Etina. 2. Butadiene. 3. Etana. 4. Cyclopentene.
A 7. The number of carbon atoms in 11.2 liters (standard) propane is equal to:
1. 15 . 1022 2. 9 . 1023 3. 0,3 . 1023 4. 4,5 . 1023
A 8. A hydrocarbon in which the orbitals of all carbon atoms have sp3 hybridization is
1. Pentin. 2. Butadiene -1.3. 3. Propane. 4. Benzene.
A 9. The mass fraction of hydrogen will be the largest in the compound:
1.C4H8 2.C4H10 3.C6H6 4.C5H12
A 10. 2-chloro-2-methylbutane interacts with
1. Hydrogen chloride. 2. Concentrated sulfuric acid. 3. Nitrogen. 4. Sodium hydroxide in alcohol solution.
A 11. The volume (in liters, standard unit) of a portion of propane containing 3.6. 1023 hydrogen atoms is equal to:
1. 1,68 2. 13,44 3. 34,48 4. 53,25
A 12. Both substances of the set have the closest chemical properties:
1. Sulfates of calcium and iron (II). 2. Propane and butane. 3. Silicon and sulfur dioxides.
4. Ethylene and acetylene.
A 13. In the scheme of transformations ethanol → X → butane, substance X is:
1. Butanol - 1. 2. Eten. 3. Chloroethane. 4. Ethane.
A 14. The mass (in grams) of a mixture consisting of 1.12 liters (standard) methane and 2.24 liters (standard) nitrogen is equal to:
1. 1,8 2. 2,3 3. 3,6 4. 4,6
A 15. General formula of the homologous series of alkanes:
1.CnH2n + 2 2.CnH2n 3.CnH2n-2 4. CnH2n-6
A 16. The cleavage (elimination) reaction is not typical for:
1. Chloroethane. 2. 1,2 - dichloroethane. 3. 2,2,3,3 - tetramethylethane. 4. Propanal.
A 17. As a result of the following transformations
C + H2 → X1 → X2 → X3 → X4 → X5 the final product (X5) is formed:
1.1 - bromobutane. 2. Bhutan. 3. 2 - bromobutane. 4.2 - bromine - 2 - methylpropane.
A 18. The mass (kg) of carbon tetrachloride obtained from 32 kg of methane with a practical yield of 94.2% is:
1. 600 2. 290 3. 400 4. 150
A 19. Name the substance according to the international IUPAC nomenclature:
CH2 - CH - CH2 - CH3
1.2 - dimethylbutane. 2.3.4 - diethylbutane. 3.3 - methylpentane.
4.3 - methylbutane.
A 20. The mass of hydrocarbon (in grams) obtained by heating 129 g of chloroethane with 52 g of sodium is:
1. 105 2. 58 3. 38 4.94
Part B.
The answer in Part B can be an integer or a sequence of numbers written in a row without spaces or commas, as well as a sequence of letters. Round off fractions to the nearest whole number, do not write the units.
В 1. Select and write down without spaces and commas, the signs characteristic of methane:
1. Hydrogenation reactions.
2. The tetrahedral form of the molecule.
3. The presence of a π - bond in a molecule.
4. Sp3 - hybridization of the orbitals of the carbon atom in the molecule.
5. Reactions with hydrogen halides.
6. Combustion in air.
В 2. Arrange the substances in the order of increasing number of bonds in the molecule, writing down the numbers without spaces and commas:
2. НСLO4 2. HNO2 3. C3H8 4. HBrO3 5. BCL3
В 3. The interaction of ethane with a volume of 44.8 liters (standard unit) with nitric acid yielded nitroethane with a mass of 102 g and a practical yield (in percent) ……
In 4. Hydrolysis of aluminum carbide (АL4C3) produced methane with a volume of 67.2 liters (standard). The mass of the formed aluminum hydroxide is (in grams) ……
Q 5. Set the correspondence between the columns. In strict accordance with the sequence of numbers in the first column, write out the letters of the selected answers from the second column. Transfer the resulting sequence of letters to the answer form (without numbers, commas and gaps), for example ABVG.
Name General formula
1. Pentane A CnH2n + 1
2. Butin B CnH2n + 2
3. Cyclopropane B CnH2n
Testing by topic "Alkanes" option 1.
Part A.
A 1. General formula of the homologous series of alkanes:
A 2. The number of elements in the substance butane is equal to:
1 2. 2 3. 3 4. 4
A 3. Homologues are:
Hexane and Hexanal. 2. Hexane and Hexene. 3. Butane and pentane. 4. Butane and pentyl.
Etana. 2. Propene. 3. Butadiene. 4. Pentina.
1. Hexane and butane. 2. Cyclobutane and cyclopropane. 3. Butane and 2-methylbutane. 4. Butane and 2-methylpropane.
Etina. 2. Isobutane. 3. Etena. 4. Cyclopentene.
A 7. The number of carbon atoms in 5.6 liters (standard) propane is equal to:
5 . 10 22 2. 1,5 . 10 23 3. 0,1 . 10 23 4. 4,5 . 10 23
Isobutane. 2. Butadiene -1.3. 3. Propyne. 4. Benzene.
C 3 H 8 2.C 4 H 10 3.C 6 H 6 4.C 5 H 12
A 10.2-bromo-2-methylbutane interacts with
1. Concentrated sulfuric acid. 2. Nitrogen. 3. Hydrogen chloride. 4. Potassium hydroxide in alcohol solution.
A 11. The volume (in liters, standard unit) of a portion of ethane containing 7.224. 10 23 hydrogen atoms is equal to:
26,88 2. 13,44 3. 4,48 4. 53,2
Calcium and manganese sulfates (II). 2. Ethane and propane. 3. Silicon and sulfur dioxides.
4. Ethylene and acetylene.
Butanol - 1. 2. Bromoethane. 3. Ethane. 4. Ethylene.
A 14. The mass (in grams) of a mixture consisting of 2.24 l (standard) methane and 1.12 l (standard) nitrogen is equal to:
1 2. 2,3 3. 3 4. 4,6
A 15. General formula of the homologous series of cycloalkanes:
Bromoethane. 2. Propanol. 3. 1,2 - dibromoethane. 4. 2,2,3,3 - tetramethylethane.
Propane. 2. Bhutan. 3. Ethane. 4. Ethylene.
A 18. The mass (kg) of carbon tetrachloride obtained from 64 kg of methane with a practical yield of 97.4% is:
600 2. 300 3. 900 4. 1500
CH 3 - CH - CH 2 - CH 3
2 - ethylpropane. 2. 3 - ethylpropane. 3.3 - methylpentane. 4.3 - methylbutane.
A 20. The mass of hydrocarbon (in grams) obtained by heating 48 g of 2 - bromobutane with 7.67 g of sodium is:
10 2. 19 3. 38 4.76
Part B.
Hydrogenation reactions.
The presence of a π - bond in a molecule.
Reactions with hydrogen halides.
Combustion in air.
Name General formula
Pentane A C n H 2n + 1
Butin B C n H 2n + 2
Cyclopropane B C n H 2n
Ethyl H C n H 2n-2
Testing by topic "Alkanes" option 2.
Part A.
For each task in Part A, several answers are given, of which only one is correct. Choose the answer that is correct in your opinion. In the answer sheet, under the task number, put a cross in the box, the number of which corresponds to the number of the answer you have chosen.
A 1. General formula for the homologous series of cycloalkanes:
C n H 2n 2. C n H 2n + 2 3. C n H 2n-2 4. C n H 2n-6
A 2. The number of elements in the substance pentane is equal to:
1 2. 2 3. 3 4. 4
A 3. Homologues are:
Hexane and Hexanal. 2. Propane and butane. 3. Bhutan and butene. 4. Butane and pentyl.
A 4. Substitution reactions are characteristic for:
Etena. 2. Propina. 3. Butadiene. 4. Pentane.
A 5. Structural isomers are:
1. Hexane and butane. 2. Cyclobutane and cyclopentane. 3. Butane and 2-methylbutane. 4. Pentane and 2 - methylbutane.
A 6. In the molecule of which substance there are no π-bonds:
Etina. 2. Butadiene. 3. Etana. 4. Cyclopentene.
A 7. The number of carbon atoms in 11.2 liters (standard) propane is equal to:
15 . 10 22 2. 9 . 10 23 3. 0,3 . 10 23 4. 4,5 . 10 23
A 8. A hydrocarbon in which the orbitals of all carbon atoms have sp 3 -hybridization is
Pentin. 2. Butadiene -1.3. 3. Propane. 4. Benzene.
A 9. The mass fraction of hydrogen will be the largest in the compound:
C 4 H 8 2.C 4 H 10 3.C 6 H 6 4.C 5 H 12
A 10. 2-chloro-2-methylbutane interacts with
1. Hydrogen chloride. 2. Concentrated sulfuric acid. 3. Nitrogen. 4. Sodium hydroxide in alcohol solution.
A 11. The volume (in liters, standard unit) of a portion of propane containing 3.6. 10 23 hydrogen atoms is equal to:
1,68 2. 13,44 3. 34,48 4. 53,25
A 12. Both substances of the set have the closest chemical properties:
Calcium and iron sulfates (II). 2. Propane and butane. 3. Silicon and sulfur dioxides.
4. Ethylene and acetylene.
A 13. In the scheme of transformations ethanol → X → butane, substance X is:
Butanol - 1. 2. Eten. 3. Chloroethane. 4. Ethane.
A 14. The mass (in grams) of a mixture consisting of 1.12 liters (standard) methane and 2.24 liters (standard) nitrogen is equal to:
1,8 2. 2,3 3. 3,6 4. 4,6
A 15. General formula of the homologous series of alkanes:
C n H 2n + 2 2. C n H 2n 3. C n H 2n-2 4. C n H 2n-6
A 16. The cleavage (elimination) reaction is not typical for:
Chloroethane. 2. 1,2 - dichloroethane. 3. 2,2,3,3 - tetramethylethane. 4. Propanal.
A 17. As a result of the following transformations
C + H 2 → X 1 → X 2 → X 3 → X 4 → X 5 the final product is formed (X 5):
1 - bromobutane. 2. Bhutan. 3. 2 - bromobutane. 4.2 - bromine - 2 - methylpropane.
A 18. The mass (kg) of carbon tetrachloride obtained from 32 kg of methane with a practical yield of 94.2% is:
600 2. 290 3. 400 4. 150
A 19. Name the substance according to the international IUPAC nomenclature:
CH 2 - CH - CH 2 - CH 3
1,2 - dimethylbutane. 2.3.4 - diethylbutane. 3.3 - methylpentane.
3 - methylbutane.
A 20. The mass of hydrocarbon (in grams) obtained by heating 129 g of chloroethane with 52 g of sodium is:
105 2. 58 3. 38 4.94
Part B.
The answer in Part B can be an integer or a sequence of numbers written in a row without spaces or commas, as well as a sequence of letters. Round off fractions to the nearest whole number, do not write the units.
В 1. Select and write down without spaces and commas, the signs characteristic of methane:
Hydrogenation reactions.
The tetrahedral form of the molecule.
The presence of a π - bond in a molecule.
Sp 3 - hybridization of the orbitals of the carbon atom in the molecule.
Reactions with hydrogen halides.
Combustion in air.
В 2. Arrange the substances in the order of increasing number of bonds in the molecule, writing down the numbers without spaces and commas:
НСLO 4 2. HNO 2 3. C 3 H 8 4. HBrO 3 5. BCL 3
В 3. The interaction of ethane with a volume of 44.8 liters (standard unit) with nitric acid yielded nitroethane with a mass of 102 g and a practical yield (in percent) ……
In 4. Hydrolysis of aluminum carbide (AL 4 C 3) obtained methane with a volume of 67.2 liters (standard). The mass of the formed aluminum hydroxide is (in grams) ……
Q 5. Set the correspondence between the columns. In strict accordance with the sequence of numbers in the first column, write out the letters of the selected answers from the second column. Transfer the resulting sequence of letters to the answer form (without numbers, commas and gaps), for example ABVG.
Name General formula
Pentane A C n H 2n + 1
Butin B C n H 2n + 2
Cyclopropane B C n H 2n
