Question

Calculate the total pressure in a mixture of 8g of dioxygen and 4g of dihydrogen confined in a vessel of 1 $dm^{3}$ at 27°C. R = 0.083 bar $dm^{3}$ $K^{-1}$ $mol^{-1}$.

Answer 1

In order to calculate the total pressure of a mixture of two or more gases, we need to use the ideal gas equation formula,

                                                          PV = nRT

where n stands for the number of moles.

Since it is a mixture of gases, we need to add the moles of Oxygen and hydrogen in order to get the total moles present in the mixture and therefore we can calculate the total pressure of the mixture

$PV=GRT\\V=ldm^3=1L$

$P=(\frac{8}{32}+\frac{4}{2})\times 0.083\times(\frac{300}{1} )$

P = 12.45 Pa

Answer 2

Explanation:

Calculate the total pressure in a mixture of 8 g of dioxygen and 4 g of dihydrogen confined

in a vessel of 1

3

dm

at 27ºC.

3 1 1 R 0.083 bar dm K mol