Question

action cold conc h2so4 on Ethanol

Answer 1

The dehydration of ethanol to give ethene not ethane.

Explanation:

Ethanol is heated with an excess of concentrated sulphuric acid (act as a catalyst) at a temperature of 170C. The gases produced are passed through sodium hydroxide solution to remove the carbon dioxide and sulphur dioxide produced from side reactions.The ethene is collected over water.

Answer 2

Explanation:

It depends on Temperature

413 Kelvin SN2 Reaction

443 Kelvin E2 Reaction