Temperature coefficient of a reaction is 2 . When temperature is increased from 30^° C to 90^° C , the rate of reaction is increased by

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Correct answer: (B) 64 times. Temperature coefficient (n)=frac Rate constant at T+10^° C Rate constant at T^° C=2 i.e., For each 10^° C rise in temperature, rate becomes two times for the reaction Temperature Rate of reaction 30^° C R_1 40^° C 2 R_1 50^° C (2)^2 R_1 60^° C (2)^3 R_1 70^° C (2)^4 R_1 80^° C (2)^5 R_1 90^° C (2)^6 R_1 ∴ Rate of reacation at 90^° C will become (2)^6=64 times.

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

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