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Question

The mathematical expression for t1/4 i.e., when (1/4)th reaction is over following first-order kinetics can be given by:

A
t1/4=2.303Klog4
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B
t1/4=2.303Klog2
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C
t1/4=2.303Klog43
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D
t1/4=2.303Klog34
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Solution

The correct option is D t1/4=2.303Klog43
As we know,
for first order reaction,
t=2.303Kloga(ax)
if t=t1/4;x=a/4
t1/4=2.303Klogaaa/4
=2.303Klog43.

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