Question

Two Vander Waals gases have same value of $a$ but a different values of $b$ which of the following statement is correct.

• A. The smaller the value of $b$ larger will be compressibility.
• B. The larger the value of $b$ larger will be compressibility.
• C. Both have same compressibility
• D. The gas with smaller value of $b$ will occupy larger volume.

Answer 1

The correct option is A The smaller the value of $b$ larger will be compressibility.

The value of $b$ represents the effective size of the gas molecules. The smaller value of b signifies smaller size and greater compressible volume.
Hence, the gas with a smaller value of $b$ will have larger compressibility.