1.

Thevalueof therate constantof a pseudofirst order reaction ……… .

Answer»

 depends on the CONCENTRATION of REACTANTS present in small amount
depends on the concentration of reactants present in excess
is independent of the concentration of reactants
 depends only on temperature

Solution : PSEUDO first order reaction is a chemical reaction in which rate of reaction dependsupon concentration of cnly one reactant while concentration of another reactant hasno effect on rate of reaction.
e.g.. HYDROLYSIS of ethyl acetate in presence of excess of water
`CH_(3)COOC_(2)H_(5) +underset("excess")(H_(2)O) overset(H^(+)) to CH_(3)COOH+ C_(2)H_(5)OH`
`r = k [ CH_(3)COO C_(2)H_(5)]^(2) [H_(2)O]^(O)`
Excess `[H_(2)O]` can cause the independency of reaction on `H_(2)O`.
Hence, (a) is the correct choice.


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