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

Definition: This calculator computes the reaction rate for a second-order irreversible chemical reaction where the rate depends on the square of the reactant concentration.

Purpose: It helps chemists and chemical engineers determine how quickly reactants are being consumed in second-order reactions.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( r \) — Reaction rate (mol/(m³·s))
• \( k_2 \) — Rate constant for second order reaction (m³/(mol·s))
• \( C_A \) — Concentration of reactant A (mol/m³)

Explanation: The reaction rate is directly proportional to the square of the reactant concentration and the rate constant.

3. Importance of Reaction Rate Calculation

Details: Accurate reaction rate calculations are essential for reactor design, process optimization, and safety assessments in chemical processes.

4. Using the Calculator

Tips: Enter the rate constant (default 0.002 m³/(mol·s)) and reactant concentration (default 1.1 mol/m³). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What defines a second-order reaction?
A: A reaction where the rate is proportional to the square of the concentration of one reactant or to the product of concentrations of two reactants.

Q2: How is the rate constant determined?
A: The rate constant is typically determined experimentally by measuring reaction rates at different concentrations.

Q3: What units does the rate constant have?
A: For second-order reactions, the rate constant has units of m³/(mol·s) in SI units.

Q4: Can this calculator be used for reversible reactions?
A: No, this calculator is specifically for irreversible second-order reactions with equal reactant concentrations.

Q5: What affects the reaction rate in real systems?
A: Temperature, pressure, catalysts, and other factors can significantly affect reaction rates beyond just concentration.