CET Karnataka Medical CET - Karnataka Medical Solved Paper-2002

  • question_answer
    A chemical reaction was carried out at 300 K and 280 K. The rate constants were found to be \[{{K}_{1}}\] and \[{{K}_{2}}\]respectively. Then:

    A)  \[{{K}_{2}}=0.25{{K}_{1}}\]

    B)  \[{{K}_{2}}=0.5{{K}_{1}}\]

    C)  \[{{K}_{2}}=4{{K}_{1}}\]

    D)  \[{{K}_{2}}=2{{K}_{1}}\]

    Correct Answer: A

    Solution :

    By the increase in temperature the activation energy decreases. So the rate of reaction increases. Here temperature difference is 20 K. At 10 K the rate constant is doubled. Therefore, here it is four times. Hence \[{{K}_{2}}=0.25K\].


You need to login to perform this action.
You will be redirected in 3 sec spinner