Question

A substance ‘A’ decomposes by a first order reaction starting initially with [A] = 2.00 mol/litre and after 200 sec, [A] = 0.15 mol/litre. For this reaction, what is the value of k ?
(a) 1.29 × 10⁻² sec⁻¹
(b) 2.03 × 10⁻³ sec⁻¹
(c) 1.80× 10⁻³ sec⁻¹
(d) 1.55 × 10⁻² sec⁻¹

Answer 1

Hello Friend

Ans

Option.D

Thank you

Answer 2

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option D is correct

D) 1.55 x 10-² /sec ✔️

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