What are the products of the electrolysis of one mole of water at STP?

Question

the choices are

a.) 11.2 L of O2 and 22.4 : of H2
b.)22.4 L of O2 and 22.4 L of H2
c.)16 g of O2 and 8 g of H2
d.) 32 g of O2 and 2 g of H2

Answer 1

A is the correct answer.

The balanced equation is:

2 H2O --> 2 H2 + O2

Therefore 1 mole H2O would produce 1 mole H2 and 1/2 mole O2.

At STP one mole of a gas occupies 22.4 L.
22.4 L/mol x 1 mol H2 = 22.4 L H2
22.4 L/mol x 1/2 mol O2 = 11.2 L O2

Answer 2

B is right option.both will be changed into Gases,1 mole of each....so we will express in volume not in grams as in option D.