Question

A and b are two different chemical species undergoing first order decomposition with half lives to 5 sec and 7.5 second. If initial concentration of a and b are in the ratio 3:2 calculate

Answer 1

A’s Half life =  2 years {let}

B’s Half life = 3 years {let} 

After 3 half lives =>

Concentration of A = A/8 and time taken = 2*3 = 6 years.

Bj will be B/2 at 3 years and after 6 years it would be B/.

Ratio =  (A/8)/(B/4) = > 3/4




Hope it will help uu

Answer 2

Answer:

Explanation:

A’s Half life = 2 years {let}

B’s Half life = 3 years {let}

After 3 half lives =>

Concentration of A = A/8 and time taken = 2*3 = 6 years.

B will be B/2 at 3 years and after 6 years it would be B/4.

Ratio = (A/8)/(B/4) = > 3/4