Worksheet Reaction Of Hydrocarbon 6w6c3a
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KEBUMEN REGENCY GOVERMENT EDUCATION AND CULTURE OFFICE STATE SENIOR HIGH SCHOOL KEBUMEN 1 7 Mayjen Sutoyo Street Kebumen Phone (0287) 381407 Zip Code 54316 E-mail : [email protected] Home page : http://www.sman1-kebumen.sch.id
WORKSHEET OF HYDROCARBON Subject Class/Program Time Allocation
: Chemistry : X/: 45 minutes
----- oooOooo ----Reactions of a hydrocarbon In this sheet you will be given information to allow you to identify an unknown hydrocarbon. You will then be asked about some of its reactions. 1.
A gaseous hydrocarbon X decolorized bromine water. What does that tell you about the hydrocarbon? .....................................................................................................................................
2.
The hydrocarbon X was found to contain 85.7 % of carbon and 14.3 % of hydrogen by mass. Use these figures to work out the empirical (simplest) formula for X. (Relative atomic masses: H = 1; C = 12) ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... .....................................................................................................................................
3.
240 cm3 of the gaseous hydrocarbon X at room temperature and pressure was found to have a mass of 0.42 g. Work out the mass of 1 mole of X. (1 mole of a gas occupies 24000 cm3 at RTP.) ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... .....................................................................................................................................
4.
Use the answers to the last two questions to work out the molecular formula of X. ..................................................................................................................................... .....................................................................................................................................
5.
Draw the fully displayed structure for the hydrocarbon... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... .....................................................................................................................................
6.
Name the hydrocarbon: .....................................................................................................................................
WORKSHEET _HYDROCARBON by Tri Lestari
Page 1 of 2
Reactions of the hydrocarbon X (Additional Question) 7.
Draw displayed formulae for the reaction between X and bromine, showing clearly the structure of the product.
8.
A mixture of X and hydrogen was ed over a heated nickel catalyst to give a different hydrocarbon Y. Name the new hydrocarbon Y. .....................................................................................................................................
9.
A similar reaction is used in the manufacture of a particular food. Which food? ..................................................................................................................................... Under the right conditions, lots of molecules of X together in a long chain to make a new large molecule Z.
10.
What name is given to the process of ing lots of small molecules together to make a large one? .....................................................................................................................................
11.
Name the large molecule Z formed in this case. .....................................................................................................................................
12.
Z is made of a chain of repeating units. Draw a section of this chain containing 3 of these repeating units.
13.
Suggest a use for Z. .....................................................................................................................................
14.
Explain why Z is suitable for use in this way. ..................................................................................................................................... .....................................................................................................................................
WORKSHEET _HYDROCARBON by Tri Lestari
Page 2 of 2
WORKSHEET OF HYDROCARBON Subject Class/Program Time Allocation
: Chemistry : X/: 45 minutes
----- oooOooo ----Reactions of a hydrocarbon In this sheet you will be given information to allow you to identify an unknown hydrocarbon. You will then be asked about some of its reactions. 1.
A gaseous hydrocarbon X decolorized bromine water. What does that tell you about the hydrocarbon? .....................................................................................................................................
2.
The hydrocarbon X was found to contain 85.7 % of carbon and 14.3 % of hydrogen by mass. Use these figures to work out the empirical (simplest) formula for X. (Relative atomic masses: H = 1; C = 12) ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... .....................................................................................................................................
3.
240 cm3 of the gaseous hydrocarbon X at room temperature and pressure was found to have a mass of 0.42 g. Work out the mass of 1 mole of X. (1 mole of a gas occupies 24000 cm3 at RTP.) ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... .....................................................................................................................................
4.
Use the answers to the last two questions to work out the molecular formula of X. ..................................................................................................................................... .....................................................................................................................................
5.
Draw the fully displayed structure for the hydrocarbon... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... .....................................................................................................................................
6.
Name the hydrocarbon: .....................................................................................................................................
WORKSHEET _HYDROCARBON by Tri Lestari
Page 1 of 2
Reactions of the hydrocarbon X (Additional Question) 7.
Draw displayed formulae for the reaction between X and bromine, showing clearly the structure of the product.
8.
A mixture of X and hydrogen was ed over a heated nickel catalyst to give a different hydrocarbon Y. Name the new hydrocarbon Y. .....................................................................................................................................
9.
A similar reaction is used in the manufacture of a particular food. Which food? ..................................................................................................................................... Under the right conditions, lots of molecules of X together in a long chain to make a new large molecule Z.
10.
What name is given to the process of ing lots of small molecules together to make a large one? .....................................................................................................................................
11.
Name the large molecule Z formed in this case. .....................................................................................................................................
12.
Z is made of a chain of repeating units. Draw a section of this chain containing 3 of these repeating units.
13.
Suggest a use for Z. .....................................................................................................................................
14.
Explain why Z is suitable for use in this way. ..................................................................................................................................... .....................................................................................................................................
WORKSHEET _HYDROCARBON by Tri Lestari
Page 2 of 2
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