Question

$3.2$g of oxygen and $0.2$g of hydrogen are placed in $1.12$ litre flask at $0^o$C. Calculate the total pressure of the gaseous mixture.

Answer 1

According to the problem.

Given that

molecules weight of oxygen=-$32g/mol$

mmolecule weight of hygrogen=$0.2g/mol$

Since,

Number of moles of oxygen=$\frac{3.2}{32g/mol}=0.1mol$

Similarly,

Number of hydrogen=$0.1mol$

Total=$0.1+0.1=0.2moles$

Hence the toal pressure,

$p=\frac{nRT}{V}$

Implies that

$P=\frac{0.2\times 0.08206\times 273.15}{0.12l}$

$P=4atm$