Wednesday, October 21, 2009

Hydrocarbons- work sheet/ igcse chemistry /As chemistry

1. The systematic name of the following compound

CH3-CH2-C( CH3)Br-CH3

is
A 2-bromo-2-methylbutane
B 3-bromo-3-methylbutane
C 2-bromopentane
D 3-bromopentane

2. 25 cm3 of hydrocarbon was exploded with 100 cm3 of oxygen (an excess). After cooling the volume of gas remaining was 62.5 cm3. On adding concentrated potassium hydroxide and shaking the volume reduced to 12.5 cm3. Which one of the following is the molecular formula of the hydrocarbon?
A CH4
B C2H4
C C2H6
D C3H6

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