`A+2B to C +D ` for a reaction from following data correct rate law =
`

Options

A. `"Rate " = K [A]^(2) [B]`
B. `"rate" =k [A]^(2) [B]^(2) `
C. `"Rate " =K[A][B]^(2)`
D. `"Rate " =K[A][B] `

Answer

C

Explanation

Rate `=k [A][B]^(2)`
Keeping [B]constant ,[A],is made a 4 times , rate also become 4 times , hence rate `prop [A].`
keeping [A] constant ,[B] is doubled , rate becomes 4 times , hence rate `prop [B]^(2)`.
`therefore "Rate"=k[A][B]^(2)`