Question

A mixture of dihydrogen and dioxygen at one bar pressure contains 20% by weight of dihydrogen. Calculate the partial pressure of dihydrogen.

Answer 1

Pressure of the gas mixture = 1 bar

Let us consider 100 g of the mixture. Therefore mass of hydrogen in the mixture = 20 g

and mass of oxygen in the mixture = 80 kg

n_hyd = {20 g}/{2 g/mol} = 10 mol