Question

3. The concentration of a reactant in a reaction following 1st order kinetic equation was determined at two different times during the progress of the reaction. 0.5M and 0.3M reactant was found in the reaction mixture after 5 and 10 minutes respectively. Calculate the value of rate constant in SI units.​

Answer 1

Answer:

this is your answer

Explanation:

Correct option is B)

For first order reaction,

k=

40

2.303

log

0.025

0.1

=

40

2.303

log 4

=

20

2.303

log 2

=

20

2.303

×0.301=0.0347

k=0.0347

Rate=k[A]

Rate=0.0347×10

−2

=3.47×10

−4

Mmin

−1

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