Question

(a) Select all of the correct statements about reaction rates from the choices below.

The lower the rate of a reaction the longer it takes to reach completion.


The fastest step in a reaction is called the rate-determining step.


A balanced chemical reaction is necessary to relate the rate of reaction to the concentration of a reactant.


Reactions involving very unstable combinations of chemicals have large rate constants.


Catalysts increase reaction rates.


Reaction rates increase as reactant concentrations decrease.


Solid catalysts do not affect reaction rates.

Answer 1

Correct statements are: i) The lower the rate of reaction, the longer it I takes to reach completion. We Catalyst in creare reaction rate in) Balanced chemical reaction is necessary to relate the rate of reaction to the concentratie of reactant a Atb BtcCtd D Rate of reaction = - 1 Da 1 - - 1 - ABS so statement (i), (ii) and (w) are correct. other staments are false because i) slowest step is rate determining step w) Reaction with unstable specie i proued slowly so have small rate constant vi) solid catalyst do effect reaction rates. . so Statement ② (i) and ② are correct.