Q.

The value of rate constant of a pseudo first order reaction

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a

Depends only on temperature

b

Depends on the concentration of reactants present in small amounts

c

Depends on the concentration of reactants present in excess

d

Is independent of the concentration of reactants

answer is C.

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Detailed Solution

A Higher order reaction converted into lower order by taking one of the reactant in large excess is called as pseudo order reaction.consider reaction  A+2B→productsrate=kAB2B is taken in large it does not influence rate of reaction KB2 is constant.rate=k'A,where K'=kB2 3rd order is converted into 1st order and rate constant depends on B taken in large excess.
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