Question

Effect of sulphuric acid on ethanol at 413 k
b.453 k

Answer 1

Answer:

The major product formed depends on the temperature of the reaction.

At 140 degree Celsius, the product is diethyl ether.

2C2H5OH = C2H5-O-C2H5 + H2O

At a higher temperature of around 170 degree Celsius, ethylene gas is produced.

C2H5OH = C2H4 + H2O.

In both the reactions, conc.H2SO4 acts as a dehydrating agent.

Answer 2

Answer:

(a) 413K

1. At 413 K, ethanol reacts with sulphuric acid to form diethyl ether.

2. As, the two molecules of ethanol combine to remove water.

(b) 453K

1. When ethanol is heated with conc. sulphuric acid at 453k, dehydration takes place and ethene is formed.

2. In this reaction sulphuric acid acts as a dehydrating agent.