From the rate equation for the reaction given below, determine the order with respect to the overall reaction:

$2 A + 3 B + 5 C \to 1 D + 4 E$
$R a t e \propto [A]^{1} [B]^{0.5} [C]^{1.5}$

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Solution

The correct option is C 3
Order of a reaction:
For a given reaction:
$a A + b B + c C \to Products$
If,
$Rate \propto [A]^{p} [B]^{q} [C]^{r}$
Overall order of the reaction is :
$(p + q + r)$
Hence the overall order (n) is
$n = 1 + 0.5 + 1.5 = 3$

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