A) The reaction is exothermic
B) The rate of backward reaction increases more than that of forward reaction with increase in temperature
C) \[{{E}_{a}}\]for the forward reaction is more than that of backward reaction
D) The difference between heat of reaction at constant pressure and that at constant volume is RT
Correct Answer: C
Solution :
Since the value of equilibrium constant,\[{{K}_{p}}\]decreases with rise in temperature, it is an exothermic reaction. For an exothermic reaction, rate of backward reaction increases more than that of forward reaction with increase in temperature. For such reactions, \[{{({{E}_{a}})}_{f}}<{{({{E}_{a}})}_{b}}\] We know that, \[\Delta H=\Delta E+\Delta {{n}_{g}}RT\] \[\therefore \]\[\Delta H-\Delta E=RT=\]constant[\[\because \]\[\Delta {{n}_{g}}=1\] (given)]
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