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Q.

A chemical reaction was carried out at 300 K and 280 K. the rate constants were found to be
$k_{1} a n d k_{2}$ respectively. Then

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a

$k_{2} = 0.5 k_{1}$

b

$k_{2} = 2 k_{1}$

c

$k_{1} = 4 k_{1}$

answer is C.

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Detailed Solution

The rate constant doubles for 10°C rise in temperature. For 20°C rise, the rate constant will be 4 time $∴ k_{1} = 4 k_{2} o r k_{2} = 0.25 K_{1}$

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