1.

For the reaction A+2" B"to" C", the reaction rate is doubled if the concentration of A is doubled. The rate is increased by four times when condcentrations of both A and B are increased by four times. The order of reaction is

Answer»

3
0
1
2

Solution :Rate, `r = K [A]^(a)[B]^(b)""…(i)`
`2r = [2 A]^(a) [B]^(b)""…(ii)`
`4R = [ 4 A ]^(a) [ 4 B]^(b) ""…(iii)`
Divding eqn. (ii) by eqn. (i), `2 = 2^(a) therefore a = 1`
Divding eqn. (ii) by eqn. (i)
`4 = 4^(a) 4^(b) = 4 xx 4^(b) = 4^(b+1)`
`therefore b + 1 = 1 or b = 0`
Hence, overall ORDER= 1.


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