Answer:
(i)\[2NOCl(g)\underset{{}}{\leftrightarrows}2NO(g)+C{{l}_{2}}(g)\]
\[\Delta
{{n}_{g}}=3-2=1\]
\[{{K}_{p}}={{K}_{c}}{{(RT)}^{\Delta
{{n}_{g}}}}\]
\[{{K}_{c}}=\frac{{{K}_{p}}}{{{(RT)}^{\Delta
{{n}_{g}}}}}=\frac{1.8\times {{10}^{-2}}}{(0.0821\times 500)}\]
\[=4.384\times
{{10}^{-4}}\,mol\,{{L}^{-1}}\]
(ii) \[CaC{{O}_{3}}(s)\underset{{}}{\leftrightarrows}CaO(s)+C{{O}_{2}}(g)\]
\[\Delta
{{n}_{g}}=1-0=1\]
\[{{K}_{p}}={{K}_{c}}{{(RT)}^{\Delta
{{n}_{g}}}}\]
\[{{K}_{c}}=\frac{{{K}_{p}}}{{{(RT)}^{\Delta
{{n}_{g}}}}}\]
\[=\frac{167}{{{(0.0821\times
1073)}^{3}}}\]
\[=1.895\,mol\,{{L}^{-1}}\]
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