1. Tardigrade
  2. Question
  3. Chemistry
  4. The density of gas A is twice that B. At the same temperature the molecular weight of gas B is twice that of A. The ratio of pressure of gas A and B will be

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. The density of gas A is twice that B. At the same temperature the molecular weight of gas B is twice that of A. The ratio of pressure of gas A and B will be

NTA AbhyasNTA Abhyas 2020Solutions

Solution:

$d_{A}=2d_{B};2M_{A}=M_{B};$

As $PM=dRT$

So $\frac{P_{A}}{P_{B}}\times \frac{M_{A}}{M_{B}}=\frac{d_{A}}{d_{B}}\times \frac{R T}{R T}$

$\frac{P_{A}}{P_{B}}\times \frac{1}{2}=2$

$\frac{P_{A}}{P_{B}}=\frac{4}{1}$