1. What is Concentration of Intermediate B Calculator?

Definition: This calculator determines the concentration of intermediate product B in a consecutive chemical reaction where k2 is much greater than k1.

Purpose: It helps chemists and chemical engineers analyze reaction kinetics and intermediate product formation in consecutive reactions.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( [B] \) — Concentration of intermediate B (mol/m³)
• \( A \) — Concentration of reactant A at time t (mol/m³)
• \( k1 \) — Rate constant for first reaction (s⁻¹)
• \( k2 \) — Rate constant for second reaction (s⁻¹)

Explanation: The formula calculates the steady-state concentration of intermediate B when k2 ≫ k1 in consecutive reactions A → B → C.

3. Importance of Intermediate Concentration Calculation

Details: Understanding intermediate concentrations is crucial for reaction optimization, product yield prediction, and process control in chemical industries.

4. Using the Calculator

Tips: Enter the concentration of A, both rate constants (k1 and k2). Ensure k2 > k1 for valid results. All values must be positive.

5. Frequently Asked Questions (FAQ)

Q1: When is this approximation valid?
A: This formula is valid when k2 is significantly larger than k1 (typically k2 > 10×k1).

Q2: What if k2 is not much greater than k1?
A: You would need to use the full kinetic solution for consecutive reactions.

Q3: How do I determine the rate constants?
A: Rate constants are typically determined experimentally or from literature data.

Q4: Does this consider reverse reactions?
A: No, this assumes irreversible consecutive reactions.

Q5: What units should I use?
A: Use consistent units - concentration in mol/m³ and rate constants in s⁻¹.