Question

Consider the equation $\text{Z}=\frac{\text{pV}}{\text{RT}}$ which of the following statement is correct?

• A. When Z > 1, real gases are easier to compress than the ideal gas.
• B. When Z = 1, gases get compressed easily.
• C. When Z > 1, real gases are difficult to compress than ideal gases.
• D. When Z = 1, real gases are difficult to compress:

Answer 1

Answer: (B), (C)

When Z = 1, gases get compressed easily.
When Z > 1, real gases are difficult to compress than ideal gases.

Ideal gases can not be compressed at all due to the absence of any interactions between the particles of gases.

Z = 1 is for an ideal gas, if a real gas achieves Z=1, then it behaves as an ideal gas but it can be compressed but it is difficult to compress.

When Z > 1 or Z<1, real gases are easier to compress than the ideal gas.

Hence, Option "B" & "C" are correct answers.