The half-life of `2` sample are `0.1` and `0.4` seconds. Their respctive concentration are `200` and `50` respectively. What is the order of the reaction

Options

A. `0`
B. `2`
C. `1`
D. `4`

Answer

B

Explanation

`t_(1//2) = a^(1-n) rArr 0.1/0.4 =((200)^(1-n))/((50)^(1-n))`
`rArr (1)/(4) = [(4)/(1)]^(1-n) = [(1)/(4)]^(n-1)`
`rArr (1)/(4^(1)) = (1)/(4^(n-1))`
`:. n - 1 = 1, n = 2`