Question

A compound x on heating releases a brown colored gas Y and another gas Z. Gas Z is the gas we inhale . Identify X and write the reaction involved . also write the type of reaction.

Answer 1

CHEMISTRY

A compound X on heating with excess conc. sulphuric acid at 443K given a saturated compound Y. X also reacts with sodium metal to evolve a colourless gas Z. Identify X, Y and Z. Write the equation of the chemical reaction of formation of Y and also write the role of sulphuric acid in the reaction.

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