1. What is Reverse Rate Constant given Dissociation Rate Constant?

Definition: This calculator determines the reverse rate constant (k_r) using the dissociation rate constant (K_D) and forward rate constant (k_f).

Purpose: It helps chemists and chemical engineers calculate the rate of the reverse reaction in chemical kinetics.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( k_r \) — Reverse rate constant (mol/(m³·s))
• \( K_D \) — Dissociation rate constant (mol/m³)
• \( k_f \) — Forward rate constant (s^-1)

Explanation: The reverse rate constant is calculated as the product of the dissociation rate constant and the forward rate constant.

3. Importance of Reverse Rate Constant Calculation

Details: Understanding reverse rate constants is crucial for modeling chemical equilibria and reaction kinetics in various chemical processes.

4. Using the Calculator

Tips: Enter the dissociation rate constant in mol/m³ and forward rate constant in s^-1. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is the relationship between K_D, k_f and k_r?
A: The dissociation constant K_D equals k_r/k_f, so k_r = K_D × k_f.

Q2: What units should I use for the inputs?
A: Use mol/m³ for K_D and s^-1 for k_f. The output will be in mol/(m³·s).

Q3: Can I use different concentration units?
A: Yes, but ensure all units are consistent. The calculator assumes SI units by default.

Q4: What's a typical value for K_D?
A: K_D values vary widely depending on the chemical system, from very small (strong binding) to very large (weak binding).

Q5: How does temperature affect these constants?
A: All rate constants are temperature-dependent, typically following the Arrhenius equation.