Question

for the hypothetical reaction 2A=3C, the reaction rate r in terms of rate of change of the concentration is given by
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Answer 1

The rate of change of concentartion in terms of A and C is $-\frac{1d[A]}{2dt}$  and $+\frac{1d[C]}{3dt}$  respectively

Explanation:

Rate law says that rate of a reaction is directly proportional to the concentration of the reactants each raised to a stoichiometric coefficient determined experimentally called as order.

$2A\rightarrow 3C$

The rate in terms of reactants is given as negative as the concentration of reactants is decreasing with time whereas the rate in terms of products is given as positive as the concentration of products is increasing with time.

Rate of disappearance of A = $Rate=-\frac{1d[A]}{2dt}$

Rate of appearance of C= $Rate=+\frac{1d[C]}{3dt}$

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