Question

How much volume of oxygen at $STP$, in litre is required to burn $4\,g$ of methane gas completely?

• A. $11.2$
• B. $5.6$
• C. $2.8$
• D. $8$

Answer 1

Answer: (A)

$11.2$

Answer 2

At STP, $\because$ For the combustion of $16\,g\,CH_{4},$
oxygen Required $=2\times 22.4\,L$
$\therefore$ For the combustion of $4\,g\,CH_{4},$
oxygen required will be
$=\frac{2\times 22.4\times 4}{16}L$
$=11.2\,L$