Question

The temperature coefficient of a reaction is 2. When the temperature is increased from ${30}^{\circ }$ to ${90}^{\circ }$, the rate of reaction is increased by:

• A. 150 times
• B. 410 times
• C. 72 times
• D. 64 times

Answer 1

The correct option is D 64 times

Given, temperature coefficient = 2
and change in temperature$=90-30={60}^{\circ }$
i.e., 6 times to the value of ${10}^{\circ }$
$\because$(Temperature coefficient is the ratio of rate constants when the temperature increases by ${10}^{\circ }C$).
Hence, rate of reaction is increased by $2^6=64$ times.