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Question

The temperature coefficient of the rate of a reaction is 2.3. How many times will the rate of the reaction increase if the temperature is raised by 25K?
(8.02times)

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Solution

C= temperature coefficient =2.3
If Temperature is T, let the rate is R.
TempRate
T KR
(T+10)KCR
(T+20)KC2R
(T+30) KC3R
If T is increased by 20 K, Rate1=(2.3)2R
If T is increased by 30 K, Rate2=(2.3)3R
At intermediate temperature, temperature is increased by 25 K
Rate =Rate1+Rate22=(2.3)2R+(2.3)2R2
=5.29R+12.167R2=8.72R
Rate will be increased by 8.72 times

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