How do you calculate the partial pressure of hydrogen gas?

1 Answer
Oct 13, 2016

Answer:

The same way you calculate the partial pressure of any other gas.........

Explanation:

.....i.e. in a gaseous mixture, the partial pressure exerted by a component gas is the same as the pressure it would exert if it ALONE occupied the container. The total pressure is the sum of the individual partial pressures.

I have just restated #"Dalton's Law of Partial Pressures"#, and using the Ideal Gas Equation, we say that #P_1=(n_1RT)/V#, #P_2=(n_2RT)/V#,.......... #P_n=(n_nRT)/V#, etc.

And thus #P_"Total"# #=# #P_1+P_2+..........P_n#

#=# #(n_1+n_2+n_3.........)xx(RT)/V#.

The partial pressure exerted by an individual component is thus proportional to #P_"Total"#, with the constant of proportionality being #n_i/(n_1+n_2+n_3...)#, the mole fraction.

This is all abstract, but you can bring an actual problem to the table.