1.

For a reaction between A and B , the initial rate of reaction is measured for various initial concentrations of A and B . The data provided are The overall order of the reaction isA. OneB. TwoC. Two or halfD. Three

Answer» Correct Answer - a
If the order of reaction w.r.t. A is n and the order of reaction w.r.t. B is m rate law becomes
Rate = `k [A]^(n)[B]^(m)`
From (i)
` 5 xx 10^(-5) = [0.20]^(n) [0.30]^(m) " " … (i)`
From (ii)
`5 xx 10^(-5) = [0.20]^(n) [0.10]^(m) " " ... (ii)`
From (iii)
` 1 xx 10^(-5) = [0.40]^(n) [0.05]^(m) " "... (iii)`
or `10 xx 10^(-5) = [0.40]^(n) [0.05]^(m)`
From equations (i) and (ii) ,
`(5 xx 10^(-5))/(5 xx 10^(-5)) = [(0.20)/(0.20)]^(n) [ (0.30)/(0.10)]^(m)`
`1 = (3)^(m) implies (3)^(0) = (3)^(m) implies m = 0`
From equations (ii) and (iii) ,
`(5 xx 10^(-5))/(10 xx 10^(-5)) = ((0.20)/(0.40))^(n) ((0.10)/(0.05))^(m)`
`(1)/(2) = ((1)/(2))^(n) implies ((1)/(2))^(1) = ((1)/(2))^(n) implies n = 1`s
Overall order of the reaction = n + m = 1 + 0 = 1.


Discussion

No Comment Found

Related InterviewSolutions