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Q.

What are the units of the rate constant of a reaction in which the half life is doubled by halving the initial concentration of reactants.

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a

M-1 s-1

b

sec-1

c

M-s-1

d

M-2 s-1

answer is B.

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Detailed Solution

for 2nd order t12=1ka0a0→a02t12→2t12 so, dxdt=k[A]2 k=1MSk=M−1S-1

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