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

Definition: This calculator computes the reaction rate for a second-order irreversible chemical reaction based on the rate constant and concentrations of reactants.

Purpose: It helps chemists and chemical engineers determine how quickly reactants are being consumed in a bimolecular reaction.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

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

Explanation: The reaction rate is directly proportional to both the rate constant and the product of the reactant concentrations.

3. Importance of Reaction Rate Calculation

Details: Accurate reaction rate determination is crucial for reactor design, process optimization, and safety considerations in chemical processes.

4. Using the Calculator

Tips: Enter the rate constant (k₂) in m³/mol·s, concentration of A (Cₐ) in mol/m³, and concentration of B (Cᵦ) in mol/m³. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is a second-order reaction?
A: A reaction whose rate depends on the concentrations of two reactants (or one reactant squared) in the rate law.

Q2: What are typical units for k₂?
A: For second-order reactions, the rate constant typically has units of m³/mol·s or L/mol·s.

Q3: What if one reactant is in excess?
A: The reaction may appear pseudo-first order if one reactant is in large excess.

Q4: How does temperature affect the rate?
A: Temperature increases typically increase the rate constant according to the Arrhenius equation.

Q5: Can this be used for reversible reactions?
A: No, this calculator is specifically for irreversible second-order reactions.