ey GChegg Studyl Guided Sc ×Ym. Course: KINS401 16073. ertrat × emView?assignmen

Question

ey GChegg Studyl Guided Sc ×Ym. Course: KINS401 16073. ertrat × emView?assignmentProblemID-98935241 K11 of 16 PartA The reactant concentration in a zero-order reaction was 8 00×10-2 M after 200 s and 1.00×10-2 Mafter 325 s is the rate constant for this reaction? What Express your answer with the appropriate units. Indicate the multiplication of units, as necessary, explicitly either with a multiplication dot or a dash. View Available Hint(s) | kou,-560×10-4 M Correct Part B What was the initial reactant concentration for the reaction described in Part A? Express your answer with the appropriate units. Indicate the multiplication of units, as necessary, explicitly either with a multiplication dot or a dash.

Explanation / Answer

Part b

For zero order reaction

[A0] - [A] = k0*t

[A0] - [8*10^-2] = 5.6*10^-4*200

[A0] = 0.192 M

Part C

For first order reaction

[A0] = [A] × exp( kt)

[A0] = [0.1] × exp( k*50)

[A0] = [3.2*10^-3] × exp( k*70)

[0.1] × exp( k*50) = [3.2*10^-3] × exp( k*70)

31.25 = exp (20k)

20k = 3.442

k = 0.172 s-1

Part d

For second order reaction

1/[A0] = 1/[A] - kt

1/[A0] = 1/[0.190] - 150k

1/[A0] = 1/[7.30*10^-2] - 900k

1/[0.190] - 150k = 1/[7.30*10^-2] - 900k

8.4355 = 750k

k = 0.0112 M-1s-1

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