Question

16 gm of oxygen and 3 gm of hydrogen are mixed and kept in 760 mm pressure at $0^{o}C$. The total volume occupied by the mixture will be nearly:

• A. 22.4 L
• B. 33.6 L
• C. 448 L
• D. 44.8 L

Answer 1

The correct option is D 44.8 L

Moles of oxygen $\left(O_2\right)=\frac{16}{32}=\frac{1}{2}mol$

Moles of hydrogen $\left(H_2\right)=\frac{3}{2}mol$

Total moles $=\frac{1}{2}+\frac{3}{2}=2mol$

Using $PV=nRT$

$V=\frac{(2\times 0.0821\times 273.15)}{1}=44.8L$

Hence, the correct option is $D$