For an elementary reaction
`2A+B to 3C`
the rate of appearance of C at time 't' is `1.3xx10^(-4)"mol L"^(-1)s^(-1)`.
Calculate at this time
(i) rate of the reaction.
(ii) rate of disappearance of A.

Explanation

Rate of reaction `= =(1)/(3)(d[C])/(dt)= +(1)/(3)xx1.3xx10^(-4)=4.33xx10^(-5)"mol L"^(-1)s^(-1)`
Rate of disappearance of `A=(d[A])/(dt)`
Rate of reaction `=-(1)/(2)(d[A])/(dt)`
Substituting the values, we get
`4.33xx10^(-5)= -(1)/(2)(d[A])/(dt) or (d[A])/(dt)= -2xx4.33xx10^(-5)`
`= -8.66xx10^(-5)=8.66xx10^(-5)` (Removing - sign)