11. Which of the following is not true for a pseudo first-order reaction?a) The reaction follows first order kineticsb) Molecularity of the reaction should be onec) The reactants such as water are present in excess and are assumed to be constant throughoutthe reactiond) Unit of the rate constant is s-1

Assertion (A) : Hydrolysis of an ester follows first order kinetics.Reason (R) : Concentration of water remains nearly constant during the course of the reaction

Consider the following statements,The rate law for the acid catalysed hydrolysis of an ester being given asRate=k[H+][ester]=k′[ester].If the acid concentration is doubled at constant ester concentration1. The second order rate constant, k is doubled.2. The pseudo first order rate constant, k is double.3. The rate of the reaction is doubled.Which of the above statements are correct?1 and 22 and 31 and 31,2 and 3

If a reaction is first order overall which of the following would be possible units for the rate constant?Question 4Select one:s–1.(mol/L) s–1. (mol/L)–1 s–1.(mol/L)–2 s–1.(mol/L) s.

b) Show that time required for a first order reaction to complete 99.9% reaction is approximately 10 times its half life period.

15. The rate constant for a first order reaction depends on _____________