The rate of reaction between two reactants A and B increases by a factor of 4 if the concentration of reactant B is doubled. The order of this reaction with respect to reactant B is

Options

A. `-1`
B. `-2`
C. 1
D. 2

Answer

B

Explanation

`R=k[B]^(n)`, `(1)/(4)R=k[2B]^(n)`
`4=((1)/(2))^(n)`
`4=2^(-n)`, `n=-2`