1.  A liquid medicine having an initial drug concentration of 1000 mg/mL undergoes zero-order kinetics with a rate constant of 100 mg/mL per day. How many days does it take for the drug to degrade by 50%?

Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter11: Chemical Kinetics: Rates Of Reactions
Section: Chapter Questions
Problem 41QRT
icon
Related questions
Question

1. 

A liquid medicine having an initial drug concentration of 1000 mg/mL undergoes zero-order kinetics with a rate constant of 100 mg/mL per day. How many days does it take for the drug to degrade by 50%?
 
2.
A drug solution with initial concentration of 100 mg/mL degrades to 90 mg/mL in 1 day and to 50 mg/mL in 5 days. If the degradation follows first-order kinetics, what is the likely value of the degradation reaction rate constant?
 
 
3.
If the rate constant in a first-order degradation reaction of a drug product is 0.462/year, what is the shelf-life of the drug product in months?
 
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

Blurred answer
Similar questions
Recommended textbooks for you
Chemistry: The Molecular Science
Chemistry: The Molecular Science
Chemistry
ISBN:
9781285199047
Author:
John W. Moore, Conrad L. Stanitski
Publisher:
Cengage Learning
Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
Chemistry
ISBN:
9781337399074
Author:
John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:
Cengage Learning
Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
Chemistry
ISBN:
9781133949640
Author:
John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:
Cengage Learning
Chemistry by OpenStax (2015-05-04)
Chemistry by OpenStax (2015-05-04)
Chemistry
ISBN:
9781938168390
Author:
Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:
OpenStax
Chemistry: An Atoms First Approach
Chemistry: An Atoms First Approach
Chemistry
ISBN:
9781305079243
Author:
Steven S. Zumdahl, Susan A. Zumdahl
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781133611097
Author:
Steven S. Zumdahl
Publisher:
Cengage Learning