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March 26, 2017

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IF a reation generally takes 40 seconds to occur at 45 degrees C, how long should the reaction take a t the following temperatures?
A. 35C
B. 55C
C. 65C

  • chem - ,

    The rule of thumb, which is not exact, is that the reaction doubles for every 10 C rise in temperature. So at 35 it should be 1/2, at 55 should be double, and at 65 should be doubled again (4x)

  • chem - ,

    the lower the temperture the longer it should take correct?

  • chem - ,

    yes.

  • chem - ,

    ok so
    A.20 seconds
    B. 80 seconds
    C. 120 seconds

  • chem - ,

    20 is ok
    80 is ok
    If you double again, that is 160 seconds. Or double x double = 4x and 4 x 40 = 160

  • chem - ,

    Thank You

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