Question

a compound X on heating produces a mixture of two gases, Y, which is reddish brown in colour and Z, which rekindles a glowing splint and a yellowish residue is formed. i) write a balanced chemical equation for the action of heat on X ii) what type of reaction is the above iii) if sodium hydroxide is added to a solution of X, state your observation iv) what is the yellow residue commonly called?​

Answer 1

Answer:

Compound X is ethanol

Compound Y is ethene

Compound Z is hydrogen gas.

C

2

H

5

OH

sulphuric acid

C

2

H

4

+H

2

O

Hot concentrated sulphuric acid is a strong dehydrating agent. It reacts with ethanol to give ethene by removing water.

C

2

H

5

OH+Na→C

2

H

5

ONa+H

2