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Question

The reaction Ak Products, is zero order while the reaction Bk products, is 1st order. for what initial concentration of A the half lives of the two reactions are equal ?

A
2
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B
n2
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C
2log2
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D
2n2
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Solution

The correct option is B 2n2

For a first-order reaction, the half-life is given by:

t1/2=ln2k
While for a zero order reaction,
t1/2=a2k
So, half life of two will be equal when a=2 ln2= initial concentration of A




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