A and B are two different chemical species undergoing first order decomposition with rate constants ka and kb which are in the ratio 3:2 in magnitude.If the initial concentration of A and B are in the ratio 3:2,what would be the ratio of concentrations of A and B after 3 half-lives of A?

Question

Sunil Kumar FP · Answer

suppose the half live of A be 20 years and that of B be 30 years
after 3 half live of A concentration of A be A/8 and timr taken is 60 years
after 30 years concentration of B will be B/2 and after 60 year its concentration will be B/4
therefore the ratio of concentration is (A/8)/(B/4)=3/4

Bharat Makkar · Answer

thank you sir.please answer my two pending doubts which are from same chapter,that is chemical kinetics.

britto george · Answer

this is a simple question and you can get good things from solving this so just try

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A and B are two different chemical species undergoing first order decomposition with rate constants ka and kb which are in the ratio 3:2 in magnitude.If the initial concentration of A and B are in the ratio 3:2,what would be the ratio of concentrations of A and B after 3 half-lives of A?

A and B are two different chemical species undergoing first order decomposition with rate constants ka and kb which are in the ratio 3:2 in magnitude.If the initial concentration of A and B are in the ratio 3:2,what would be the ratio of concentrations of A and B after 3 half-lives of A?

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A and B are two different chemical species undergoing first order decomposition with rate constants ka and kb which are in the ratio 3:2 in magnitude.If the initial concentration of A and B are in the ratio 3:2,what would be the ratio of concentrations of A and B after 3 half-lives of A?

A and B are two different chemical species undergoing first order decomposition with rate constants ka and kb which are in the ratio 3:2 in magnitude.If the initial concentration of A and B are in the ratio 3:2,what would be the ratio of concentrations of A and B after 3 half-lives of A?

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