1. What is Rate Constant of Second Order Irreversible Reaction?

Definition: The rate constant for a second order reaction quantifies how quickly reactants are converted to products in a bimolecular reaction.

Purpose: This calculator helps chemists and chemical engineers determine the rate constant for second-order reactions from experimental data.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( k_2 \) — Rate constant (m³/mol·s)
• \( r \) — Reaction rate (mol/m³·s)
• \( C_A \) — Concentration of reactant A (mol/m³)
• \( C_B \) — Concentration of reactant B (mol/m³)

Explanation: The reaction rate is divided by the product of the concentrations of both reactants to determine the rate constant.

3. Importance of Rate Constant Calculation

Details: Knowing the rate constant is essential for reaction engineering, reactor design, and predicting reaction behavior under different conditions.

4. Using the Calculator

Tips: Enter the reaction rate in mol/m³·s and concentrations of both reactants in mol/m³. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What are typical units for second-order rate constants?
A: For second-order reactions, the units are typically m³/mol·s or L/mol·s.

Q2: How does temperature affect the rate constant?
A: Rate constants generally increase with temperature according to the Arrhenius equation.

Q3: What if one reactant is in large excess?
A: The reaction may appear first-order (pseudo-first order) with respect to the other reactant.

Q4: Can this be used for reactions with different stoichiometry?
A: The formula assumes a 1:1 stoichiometric ratio between reactants A and B.

Q5: How is the reaction rate determined experimentally?
A: Typically by measuring concentration changes over time using spectroscopic or chromatographic methods.