Question

Which of the following statements are correct?
I. Larger if the value of $\frac{T_c}{P_c}$ for a gas larger would be its excluded volume.
II. Larger is the excluded volume of gas, more will be its critical volume.
III. The slope for an isochor obtained for a gas showing $P(V-b)=RT$ is $\left[\frac{R}{V-b}\right]$.
IV. The excluded volume of $He$ is more than $H_2$.

• A. I, II, III
• B. I, II, IV
• C. II, III, IV
• D. III, IV

Answer 1

Answer: (A)

I, II, III

The statements (I), (II) and (III) are correct.
I. Larger if the value of $\frac{T_c}{P_c}$ for a gas larger would be its excluded volume.
II. Larger is the excluded volume of gas, more will be its critical volume.
III. The slope for an isochor obtained for a gas showing $P(V-b)=RT$ is $\left[\frac{R}{V-b}\right]$.
IV. The excluded volume of $He$ is less than $H_2$. $b$ for $He=0.1142litremo{l}^{-1}$ and $b$ for $H_2$ is $0.146litremo{l}^{-1}$