Question

Assertion :Compressibility factor $\left(Z\right)$ for non ideal gases is always greater than 1. Reason: Non-ideal gases always exert higher pressure than expected.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. If both Assertion and Reason are incorrect.

Answer 1

The correct option is D If both Assertion and Reason are incorrect.

$Z=\frac{PV}{RT}$

For an ideal gas $Z=1$ and is independent of temperature and pressure.

$Z>1$, for such gases repulsive forces predominante.

$Z<1$,for such gases attractive forces predominante.