Question

# A chemical reaction was carried out at 300 K and 280 K. The rate constants were found to be K1 and K2 respectively then

A
K20.5K1
B
K20.25K1
C
K22K1
D
K24K1

Solution

## The correct option is B K2≈0.25K1Let the rate constant at 300 K be K1. Temperature decrease of 10∘C, rate constant value becomes approximately half the original value. Decrease in temperature = 20∘C The rate constant, K2 at 280 C is K2=0.25K1 K2=0.25K1

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