Question

volume of gases evolved when dil .H2SO4 is electrlysed using 2F at STP

Answer 1

when dil H2S04 is electrolysed  using 2F at STP then the equation that is formed is

2H+2e-->H2

2H20--->O2+2e+4H

one mole of H2 and O2 both is released from 2 moles of electrons.

two moles of total gases are released from 2f of electricity.

Now comes the main answer to your question.

volume of one mole is around 22.4 litres

and volume of two moles is around 44.8 litres.

Answer 2

"Let’s write chemical reactions occur during electrolysis of $H_{2} SO_{4}.$

At cathode; $2 H ^ { + } + 2 e ^ { - } \rightarrow H _ { 2 }$

At Anode ; $O _ { 2 } \rightarrow \frac { 1 } { 2 } O _ { 2 } + 2 e ^ { - }$

From the reactions, it is clearly states that 2 moles of electrons give half mole of $O_{2}$ and one mole of $H_{2}$.

Therefore, 2 moles of fluorine gives 2 moles of total gases.

1 mole of gas occupied volume is 22.4 L

Total moles = 1 + 0.5 = 1.5 mol

1.5 mole of gas occupied $22.4 \times 1.5=33.6 L$."