1.

Study the two photochemical reactions and answer the questions given below: For the overall reaction between A and B to yield C and D two mechanisms are proposed: (I) A+B rarr AB* rarr C+D,k_(1)=1xx10^(-5)M^(-1)s^(-1) (II) A rarr A* rarr E,k_(1)=1xx10^(-4)M^(-1)s^(-1) E+Brarr C+D,k_(2)=1xx10^(10)M^(-1) s^(-1) (species with * are short-lived) Rate according to mechanism II when concentration of each reactant is 1 M will be:

Answer»

`1xx10^(-4) M s^(-1)`
`1xx10^(10)M s^(-1)`
`1xx10^(-6)M s^(-1)`
`1xx10^(-10) M s^(-1)`

ANSWER :A


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