Question

7. The combustible gas released by electrolysis of
water containing a few drops of dilute sulphuric​

Answer 1

Answer: The answer is H2.

Explanation: Drops of sulphuric acid just increase the rate of electrolysis. So, hydrogen gas is collected at the cathode and it is combustible.

You saw it in anthe right?

Answer 2

Answer:

Hydrogen gas

Explanation:

At anode, the reaction taking place is:

$6H_2O_{(l)}\rightarrow O_2_{(g)}+4H_3O^+_{(aq)}+4e^-$

At cathode, the reaction taking place is:

$4e^-+4H_2O_{(l)}\rightarrow 2H_2_{(g)}+4OH^-_{(aq)}$

Overall reaction:-

$2H_2O_{(l)}\rightarrow 2H_2_{(g)}+O_2_{(g)}$

Sulphuric acid acts as a catalyst only. Thus, the combustible gas produced is hydrogen gas.