States of Matter - Result Question 21
####21. The compressibility of a gas is less than unity at STP. Therefore,
(a) $V _m>22.4 L$
(b) $V _m<22.4 L$
(c) $V _m=22.4 L$
(d) $V _m=44.8 L$
(2000, 1M)
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Solution:
- Compressibility factor $(Z)=\frac{V}{V _{\text {id }}}<1$ (given)
$$ \begin{array}{lc} \Rightarrow & V<22.4 L \ \because & V _{\text {id }}(1 mol)=22.4 L \text { at STP } \end{array} $$
