States of Matter - Result Question 18

####18. Positive deviation from ideal behaviour takes place because of $(2003,1 M)$

(a) molecular interaction between atom and $p V / n R T>1$

(b) molecular interaction between atom and $p V / n R T<1$

(c) finite size of atoms and $p V / n R T>1$

(d) finite size of atoms and $p V / n R T<1$

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Solution:

  1. Positive deviation corresponds to $Z>1$

$\because \quad Z=\frac{p V}{n R T}$, for positive deviation, $\frac{p V}{n R T}>1$.



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