Question

The density of gas A is twice that of gas B, molecular mass of A is Half of molecular mass B, the partial pressure ratio of A and B is

Answer 1

I think ur doubt will be clear.

Answer 2

Answer:

The partial pressure ratio of A and B is 4:1.

Explanation:

Density of gas A = 2d

Density of gas B = d

Molar mass of gas A ,m= $\frac{1}{2}M$

Molar mass of gas B ,m'= M

$Density=\frac{P\times M}{R\times T}$

Partial pressure of gas A = $p_A$

$2d=\frac{p_A\times m}{R\times T}$..(1)

Partial pressure of gas B = $p_B$

$d=\frac{p_B\times m'}{RT}$..(2)

Dividing (1) and (2):

$\frac{2d}{d}=\frac{\frac{p_A\times m}{R\times T}}{\frac{p_B\times m'}{RT}}$

$2=\frac{p_A\times \frac{1}{2}M}{p_B\times M}$

$\frac{p_A}{p_B}=\frac{4}{1}$

The partial pressure ratio of A and B is 4:1.