Gases $X,\ Y,\ Z,\ P\ and\ Q$ have the van der Waals’ constants $a\ and\ b$ (in CGS units) as shown below [table] | $X$ | $Y$ | $Z$ | $P$ | $Q$ ; $a$ | $6$ | $6$ | $20$ | $0.05$ | $30$ ; $b$ | $0.025$ | $0.15$ | $0.1$ | $0.02$ | $0.2$ [/table] The gas with the highest critical temperature is

Question

Dr. Abubacker · Accepted Answer

(b)
The value of van der Waals’ constant ‘$a$’ increases in the same order as the critical temperature. Here, the value of $a$ is highest of $Q\ hence,\ gas\ Q$ has the highest critical temperature.

Q. Gases $X,\ Y,\ Z,\ P\ and\ Q$ have the van der Waals’ constants $a\ and\ b$ (in CGS units) as shown below [table] | $X$ | $Y$ | $Z$ | $P$ | $Q$ ; $a$ | $6$ | $6$ | $20$ | $0.05$ | $30$ ; $b$ | $0.025$ | $0.15$ | $0.1$ | $0.02$ | $0.2$ [/table] The gas with the highest critical temperature is

Explanation

Reviewed by Dr. Abubacker

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