# NEET Chemistry Chemical Kinetics Questions Solved

BOARD

What do understand by the rate law and rate constant of a reaction? Identify the order of a reaction if the units of its rate constant are:

(i) L-1 mol s-1      (ii) L mol-1 s-1

The rate of reaction is found to depend on $\alpha$ concentration of term of reactant A and $\beta$ concentration term of reactant  B

Then Rate of reaction  $\propto$$\left[A{\right]}^{\alpha }\left[B{\right]}^{\beta }$

or  Rate = K$\left[A{\right]}^{\alpha }\left[B{\right]}^{\beta }$

This expression is called Rate law.

'K' in this expression is called Rate constant.

Rate constant's unit:

(i) Unit= L-1 mol s-1  $\to$Zero order reaction

(ii) Unit=L mol-1 s-1  $\to$Second order reaction.

Difficulty Level:

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