Chemistry

Problem

For a reaction the Rate Law is

\text{Rate} = k[A]^a[C]^b

Where 'C' act as catalyst. At an initial concentration

[A] = 0.1 \text{ M}

[C] = 0.01 \text{ M}

t_{1/3}

and

t_{5/9}

was found to be 30 min and 75 min respectively. But

t_{1/3}

was found to be 7.5 min if initial concentration are

[A] = 0.2 \text{ M}

and

[C] = 0.02 \text{ M}

. Select the correct option(s). [Given

t_x

is time required for x fraction of reactant the react] (A)

a = 2

(B)

b = 2

[A] = 0.2 \text{ M}

[C] = 0.02 \text{ M}

t_{5/9}

is 18.75 min. (D) When initial concentration are

[A] = 0.2 \text{ M}

[C] = 0.02 \text{ M}

t_{5/9}

is 22.5 min.