JEE MAIN - Chemistry (2002 - No. 9)
For the reaction CO (g) + (1/2) O2 (g) $$\leftrightharpoons$$ CO2 (g), Kp/Kc is :
RT
(RT)-1
(RT)-1/2
(RT)1/2
Explanation
$${K_p} = {K_c}{\left( {RT} \right)^{\Delta n}};$$
$$\Delta n = 1 - \left( {1 + {1 \over 2}} \right)$$
$$ = 1 - {3 \over 2} = - {1 \over 2}.$$
$$\therefore$$ $$\,\,\,\,{{{K_p}} \over {{K_c}}} = {\left( {RT} \right)^{ - 1/2}}$$
$$\Delta n = 1 - \left( {1 + {1 \over 2}} \right)$$
$$ = 1 - {3 \over 2} = - {1 \over 2}.$$
$$\therefore$$ $$\,\,\,\,{{{K_p}} \over {{K_c}}} = {\left( {RT} \right)^{ - 1/2}}$$
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