What is the first-order rate constant for its decay?

Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter25: Nuclear Chemistry
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Problem 78SCQ
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Middle problem please

O b. First
O c. Second
d. Impossible to tell from the information given.
Clear my choice
Carbon-14 is a radioactive isotope that decays with a half-life of 5730 years. What is the first-order rate constant for its decay?
Select one:
O a. 1.21x104 years1
O b. 3.49x10-4 years1
Oc.5.25x10-5 years1
O d. 3.97x103 years1
Which of the following affects the activation energy of a reaction?
Select one:
a. Temperature of reactants
b. Concentration of reactants
c. Surface area of reactants
d. Presence of a catalyst
Clear my choice
Transcribed Image Text:O b. First O c. Second d. Impossible to tell from the information given. Clear my choice Carbon-14 is a radioactive isotope that decays with a half-life of 5730 years. What is the first-order rate constant for its decay? Select one: O a. 1.21x104 years1 O b. 3.49x10-4 years1 Oc.5.25x10-5 years1 O d. 3.97x103 years1 Which of the following affects the activation energy of a reaction? Select one: a. Temperature of reactants b. Concentration of reactants c. Surface area of reactants d. Presence of a catalyst Clear my choice
Expert Solution
Step 1

Relationship between t1/2 and k in first order reaction :- 

t1/2 = ln 2/k 

Or 

t1/2 = 0.693/k 

k is the rate constant for first order reaction 

t1/2 is the half life.

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