1.

Which of the following expression can be used to describe the instantaneous rate of the reaction ? `2A+B rarr A_(2)B`A. `(1)/(2)(-d[A])/(d t)`B. `(-d[A])/(d t)`C. `(1)/(2) (d[A_(2)B])/(d t)`D. `(1)/(2) (-d[A])/(d t).(d[B])/(d t)`

Answer» Correct Answer - A
The instantaneous rate of the reaction can be expressed by any of the following expresisons.
`(1)/(2)(-d[A])/(d t)` or `(-d[B])/(d t)` or `(d[A_(2)B])/(d t)`


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