Question

The density of a gas at ${27}^{\circ }C$ and 1 atm is ‘d’. At what temperature would it density be 0.75d, if the pressure is kept constant?

• A. ${20}^{\circ }C$
• B. ${30}^{\circ }C$
• C. $400k$
• D. $300k$

Answer 1

The correct option is C $400k$

$d=\frac{PM}{RT}$
$\frac{d}{0.75d}=\frac{T}{300}$
$T=\frac{300}{0.75}=400K$