Amultistep reaction can only occur as fast as its slowest step. therefore, it is the rate law of the slow step that determines the rate law for the overall reaction. consider the following multistep reaction: a + b → ab (slow) a + ab → a2b (fast)2a + b→ a2b (overall) based on this mechanism, determine the rate law for the overall reaction.

Answer : The rate law for the overall reaction is,

Explanation :

Rate law : It is defined as the expression which expresses the rate of the reaction in terms of molar concentration of the reactants with each term raised to the power their stoichiometric coefficient of that reactant in the balanced chemical equation.

As we are given the mechanism for the reaction :

Step 1 :    (slow)

Step 2 :     (fast)

Overall reaction :

The rate law expression for overall reaction should be in terms of A and B.

As we know that the slow step is the rate determining step. So,

The slow step reaction is,

The expression of rate law for this reaction will be,

Hence, the rate law for the overall reaction is

explanation:

venn diagram is pictorial representation with of circles showing the relation between two finite sets or things. the intersection part of two circles conveys the relation present in between those sets or things.

here in the venn diagram of sand and salt two circles represent sand and salt. but the area falling under the intersection of these circle represents the mixture of sand and salt.

so, in a venn diagram the mixture will be placed in a middle that is in between the intersection of two circles.