A sample of oxygen gas and a sample of hydrogen gas both have the same mass, same volume and the same…

A sample of oxygen gas and a sample of hydrogen gas both have the same mass, same volume and the same pressure. The ratio of their absolute temperature is
  1. $1: 4$
  2. $4: 1$
  3. $1: 16$
  4. $16: 1$

Solution

$\mathrm{P}_1 \mathrm{~V}_1=\frac{\mathrm{m}_1}{\mathrm{M}_1} \mathrm{RT}_1 \ldots$...(i) $\mathrm{P}_2 \mathrm{~V}_2=\frac{\mathrm{m}_2}{\mathrm{M}_2} \mathrm{RT}_2 \ldots$ (ii) Dividing (i) by (ii) $\frac{\mathrm{T}_1}{\mathrm{~T}_2}=\frac{\mathrm{M}_1}{\mathrm{M}_2}=\frac{32}{2}=\frac{16}{1}$

Asked in: MHT CET 2023 (13 May Shift 2)

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