Question

what is the role of conc.h2so4 in making ethane from etanol

Answer 1

hey mate

here is your answer

conc.H2SO4 acts as dehydrating agent in the reaction of formation of ethene from ethanol.

Answer 2

Conc. h2so4 act as dehydrating agent(removes water molecule from ethanol) and also act as a catalyst in the reaction of converting ethanol to ethane.

ethanol is dehydrated to ethane by heating ethanol with excess with excess of conc. h2so4 at 170 degree c

Hope its clear