Observe the following reaction
`2A +B rarr C`
The rate of formation of C is `2.2 xx 10^(-3) "mol L"^(-1) "min"^(-1)`. What is the value of `-(d[A])/(dt)("in mol L"^(-1) "min"^(-1))` ?

Options

A. `2.2 xx 10^(-3)`
B. `1.1 xx 10^(-3)`
C. `4.4 xx 10^(-3)`
D. `5.5 xx 10^(-3)`

Answer

C

Explanation

Here `(d[C])/(dt)=2.2xx10^(-3)"mol L"^(-1)"min"^(-1)`
For the reaction `2A +B rarrC`
`-(1)/(2)(d[A])/(dt)=(d[B])/(dt)=(d[C])/(dt)`
`:. -(d[A])/(dt)=2(d[C])/(dt) `
`=2xx2.2xx10^(-3) "mol L"^(-1) "min"^(-1)`
`=4.4 xx 10^(-3) "mol"^(-1) L^(-1) "min"^(-1)`.