Which is the rate determining step of a reaction ?

The rate-determining step is :

In the series reaction Aoverset(K_(1))(rarr)Boverset(K_(2))(rarr)Coverset(K_(3))(rarr)D , if K_(1)gtK_(2)gtK_(3) then the rate determing step of the reaction is a) ArarrB b) CrarrD c) BrarrC d) Any step

Define rate of a reaction.

The following mechanism has been proposed for the reaction of NO and Br_2 to form NOBr NO (g) + Br_2(g) harr NOBr_2 (g) (fast) NOBr_2 (g) + NO harr 2NOBr(g) (slow) If the second step is rate determining step, the order of the reaction with respect to NO(g) is

for the reaction 2H_2(g)+2NO(g)rarrN_2(g)+2H_2O(g) the proposed mechanism is as followed (i) 2NO(g) (ii) N_2O_2(g)+H_2(g)rarrN_2O(g)+H_2O(g) N_2O(g)+H_2(g)rarrN_2(g)+H_ 2O(g) If the second step is the rate determining step then What is the rate law for the reaction?

What is the difference between rate of a reaction and rate constant?

For the reaction 2H_2(g)+2NO(g)rarrN_2(g)+2H_2O(g) the proposed mechanism is as followed (i) 2NO(g) (ii) N_2O_2(g)+H_2(g)rarrN_2O(g)+H_2O(g) N_2O(g)+H_2(g)rarrN_2(g)+H_ 2O(g) If the second step is the rate determining step then what Is the molecularity of the reaction

For the reaction 2H_2(g)+2NO(g)rarrN_2(g)+2H_2O(g) the proposed mechanism is as followed (i) 2NO(g) (ii) N_2O_2(g)+H_2(g)rarrN_2O(g)+H_2O(g) N_2O(g)+H_2(g)rarrN_2(g)+H_ 2O(g) If the second step is the rate determining step then what IS the order or the reaction ?

Define average rate of a reaction.