Question

`2A rarr B + C`. It would be a zero-order reaction when
A. the rate of reaction is proportional to square of concentration of A
B. the rate of reaction remains same at any concentration of A
C. the rate remains unchanged at any concentration of B and C
D. the rate of reaction doubles if concentration of B is incereased to double

Answer 1

Correct Answer - B
For the reaction
`3ArarrB+c`
the differential rate law is
Rate `=k[A]^(x)`
where `x` the order of reaction. Zero order reaction means that the rate of the reaction is proportional to zero power of the concentration of reactant i.e., `x=0` . Thus,
Rate `=k`
Hence, the rate of reaction remains the same at any concentration of `A` .