1. What is Half Life of Zero Order Reaction?

Definition: The half-life of a zero-order reaction is the time required for the initial concentration of the reactant to reduce to half its original value.

Purpose: This calculator helps determine how long it takes for the concentration of a reactant in a zero-order reaction to decrease by half.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( T_{1/2} \) — Half-life of the reaction (seconds)
• \( C_0 \) — Initial concentration of reactant (mol/m³)
• \( k \) — Rate constant of the zero-order reaction (mol/m³·s)

Explanation: For zero-order reactions, the half-life is directly proportional to the initial concentration and inversely proportional to the rate constant.

3. Importance of Half-Life Calculation

Details: Understanding half-life helps in predicting reaction kinetics, determining reaction mechanisms, and designing chemical processes.

4. Using the Calculator

Tips: Enter the initial concentration in mol/m³ and the rate constant in mol/m³·s. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What distinguishes zero-order reactions?
A: In zero-order reactions, the rate is independent of the reactant concentration, remaining constant throughout the reaction.

Q2: How does half-life change in zero-order reactions?
A: Unlike first-order reactions, the half-life of zero-order reactions depends on the initial concentration.

Q3: What are examples of zero-order reactions?
A: Common examples include some enzyme-catalyzed reactions and surface-catalyzed reactions where the surface is saturated.

Q4: Can half-life be used to determine reaction order?
A: Yes, the dependence of half-life on initial concentration helps identify reaction order.

Q5: What units should I use for the inputs?
A: Use mol/m³ for concentration and mol/m³·s for the rate constant for consistent results.