The rate constant of the reaction A → B is 0.6 ˣ 10⁻³ mol per second.

The Rate Constant Of The Reaction A B Is Chemistry Question

The rate constant of the reaction A → B is 0.6 ˣ 10⁻³ mol per second. If the concentration of A is 5 M, then concentration of B after 20 minutes is

Options

(a) 3.60 M
(b) 0.36 M
(c) 0.72 M
(d) 1.08 M

Correct Answer:

0.72 M

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.

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Topics: Electrochemistry and Chemical Kinetics (87)
Subject: Chemistry (2512)

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2 Comments on The rate constant of the reaction A → B is 0.6 ˣ 10⁻³ mol per second.

prema March 30, 2018 at 4:49 pm

Reaction is of zero order as the unit of rate constant is mol L⁻¹ S⁻¹
.·. Concentration of B =k × t =0.6×10⁻³ × 20 × 60 = 0.72 M

Raja December 15, 2018 at 12:08 pm

Let at time t=0 (A)= a and (B)=0
At time t=(20*60)sec (A)= (a-x) and (B)=x then
For 1st order reaction
(A’) =(A) – kt
: a-x = a – 0.6*10-3*20*60
Solving it will give
X= 0.72 M