First order: [A]oIn———- = kt [A]tt1/2= .693/k The reaction 4 PH3 (g)P4 (s) + 6 H2 (g) is first order inPH3 (g) and has arate constant k of 1.13 x 10-2 s-1.What is the half-life, t, (in s)?O 7.83 x 10-3O 35.0O 61.3O 88.5O 1.63 x 10-2 The same reaction as in the previousproblem: 4 PH3 (g)P4 (s) + 6 H2 (g)is first order in PH3 (g) and has a rateconstant k = 1.13 x 10-2 s-1. If[PH3], = .417 M,%Dat what time (in s) will [PH3] = .174M?0.0143O 212O 77.3O 296O 44.1

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Answered: The reaction 4 PH3 (g) P4 (s) + 6 H2…

The reaction 4 PH3 (g) P4 (s) + 6 H2 (g) is first order in PH3 (g) and has a rate constant k of 1.13 x 10-2 s-1. What is the half-life, ty (in s)? O 7.83 x 10-3 O 35.0 O 61.3 O 88.5 O 1.63 x 10-2

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter30: Kinetic Methods Of Analysis

Section: Chapter Questions

Problem 30.7QAP

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Question

100%

First order: [A]o In———- = kt [A]t t1/2= .693/k

The reaction 4 PH3 (g)
P4 (s) + 6 H2 (g) is first order in
PH3 (g) and has a
rate constant k of 1.13 x 10-2 s-1.
What is the half-life, t, (in s)?
O 7.83 x 10-3
O 35.0
O 61.3
O 88.5
O 1.63 x 10-2

The same reaction as in the previous
problem: 4 PH3 (g)
P4 (s) + 6 H2 (g)
is first order in PH3 (g) and has a rate
constant k = 1.13 x 10-2 s-1. If
[PH3], = .417 M,
%D
at what time (in s) will [PH3] = .174
M?
0.0143
O 212
O 77.3
O 296
O 44.1

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