Question

16 $g$ of oxygen occupies a volume of 22.4 $L$ at 1 $atm$ then:

• A. $0^{o}C$
• B. ${30}^{o}C$
• C. ${273}^{o}C$
• D. $273K$

Answer 1

The correct option is C ${273}^{o}C$

$16g$ of oxygen gas is $0.5$ mole.
No. of moles of gas is inversely proportional to temperature,with other factors being same ($PV=nRT$)
$1$ mole of oxygen gas occupies $22.4$ litres at $1$ $atm$ pressure and $273K$ ($0^{0}C$)
Thus, $0.5$ moles of it would occupy same volume at 1 $atm$ pressure and $546$ $K$ (${273}^{0}C$)