question_answer

A chemical reaction was carried out at 300 K and 280 K. The rate constants were found to be K1 and K2 respectively. The energy of activation is \[\text{1}\text{.157}\times \text{1}{{\text{0}}^{\text{4}}}\ cal\ mol{{e}^{-1}}\] and \[R=1.987\ cal\]. Then      [KCET 2002]

A)                 \[{{K}_{2}}\approx 0.25{{K}_{1}}\]           

B)                         \[{{K}_{2}}\approx 0.5{{K}_{1}}\]

C)                 \[{{K}_{2}}\approx 4{{K}_{1}}\] 

D)                 \[{{K}_{2}}\approx 2{{K}_{1}}\]