TET 323University of IbadanSep 28, 2026
PCH 201: Chemical Reaction Kinetics & Pharmaceutical Applications
Structure
11 Concept Stages
Practice Exam
50 Practice Qs
Active Recall
Exam-Matched
Executive Topic Summary
Master how fast drugs break down and react, from calculating reaction rates and half-lives to applying kinetic principles to drug stability, shelf-life prediction, and fate in the body.
High-Yield Exam Takeaways
- Why Do We Care About Reaction Rates?
- Measuring Speed: Reaction Rate & The Rate Law
- Zero-Order Reactions: Constant Speed
- First-Order Reactions: Exponential Decay
- Second-Order Reactions: When Two Molecules Meet
- How to Find the Order and Rate Constant
- The Arrhenius Equation: Temperature's Powerful Effect
- Collision Theory & Transition State Theory
- How the Solvent Influences Reaction Rate
- Other Factors: Catalysts and Light
- Applying Kinetics to Pharmacy: Shelf-Life & Stability
Study Tree Preview (Bite-Sized Concepts)
1Why Do We Care About Reaction Rates?
2 Micro-BitesThe Pharmacist's Kinetic Dilemma:Think about everyone involved with a drug. The manufacturer needs it to stay potent on the shelf. The pharmacist needs to know how to store it and advise patients. The doctor and p...
What Controls How Fast a Reaction Goes?:Every chemical reaction has a speed, or rate, that depends on the conditions. The main factors that act like dials controlling this speed are:
- **Concentration of the reactants** ...
2Measuring Speed: Reaction Rate & The Rate Law
3 Micro-BitesDefining the Speed of a Chemical Change:Let's define speed precisely. For a simple reaction like $X + Y \rightarrow P$, the rate is how fast the reactants disappear or the product appears. We write it as a derivative:
$$...
Order of Reaction: What Concentration Matters?:The <term def="the power to which the concentration of a reactant is raised in the rate law">order of a reaction</term> tells us how many concentration terms control the speed. It'...
3Zero-Order Reactions: Constant Speed
2 Micro-BitesWhen Speed Doesn't Depend on Concentration:In a <term def="a reaction where the rate is constant and does not depend on the concentration of reactants">zero-order reaction</term>, the rate is just a constant, $k$. The speed...
Half-Life and Units for Zero Order:The <term def="the time required for the concentration of a reactant to decrease to half of its initial value">half-life ($t_{1/2}$)</term> is super useful. For zero order, we set ...
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