In a reaction, the initial conc. of the reactants increases four fold and rate becomes eight times of its initial value, order of reactions is

Question

In a reaction, the initial conc. of the reactants increases four fold and rate becomes eight times of its initial value, order of reactions is (A) 2 (B) 3.5 (C) 2.5 (D) 1.5

Tardigrade Admin · Accepted Answer

Let the rate law be textr = textk (. textc .) textn ... (. texti .) on increasing concentration 8 textr= textk(4 textc)n ... (ii) 23=22 textn 2 textn=3 textn=1.5

Q. In a reaction, the initial conc. of the reactants increases four fold and rate becomes eight times of its initial value, order of reactions is

2

3.5

2.5

1.5

Let the rate law be
$r = k (c)^{n} ... (i)$
on increasing concentration
$8 r = k (4 c)^{n}$ ... (ii)
$2^{3} = 2^{2 n}$
$2 n = 3$
$n = 1.5$

Q. In a reaction, the initial conc. of the reactants increases four fold and rate becomes eight times of its initial value, order of reactions is

2

3.5

2.5

1.5

Let the rate law be r=k(c)n...(i) on increasing concentration 8r=k(4c)n ... (ii) 23=22n 2n=3 n=1.5

Let the rate law be
$r = k (c)^{n} ... (i)$
on increasing concentration
$8 r = k (4 c)^{n}$ ... (ii)
$2^{3} = 2^{2 n}$
$2 n = 3$
$n = 1.5$