question_answer 58)

  The value of rate constant of a pseudo first order reaction.......... (a) depends on the concentration of reactants present in small amount (b) depends on the concentration of reactants present in excess (c) is independent of the concentration of reactants (d) depends only on temperature

Answer:

                  (a, b) Pseudo first order reaction is a chemical reaction in which rate of reaction depends upon concentration of only one reactant while concentration of another reactant has no effect on rate of reaction. e.g., hydrolysis of ethyl acetate in presence of excess of water                      Excess [H2O] can cause the independency of reaction on H2O. Hence, (a) is the correct choice.