NEET Chemistry Chemical Kinetics Questions Solved

NEET - 2012

In a zero order reaction for every 10° rise of temperature, the rate is doubled. If the temperature is increased from 10°C to 100°C, the rate of the reaction will become

(a) 256 times
(b) 512 times
(c) 64 times
(d) 128 times

(b) For 10° rise in temperature, n=1 so rate = 2n = 21 = 2

When temperature is increased from 10°C to 100°C, change in temperature = 100-10 = 90°C, i.e., n= 9
So, rate = 29 512 times

Alternate method With every 10° rise in temperature, rate becomes double, so
r'r=2100 - 1010 = 29 = 512 times.

Difficulty Level:

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