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:

  1. Compressibility factor $(Z)=\frac{V}{V _{\text {id }}}<1$ (given)

$$ \begin{array}{lc} \Rightarrow & V<22.4 L \ \because & V _{\text {id }}(1 mol)=22.4 L \text { at STP } \end{array} $$



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