1. What is Temperature of Reaction Calculator?

Definition: This calculator determines the temperature of a chemical reaction based on Gibbs free energy and the equilibrium constant.

Purpose: It helps chemists and chemical engineers understand the temperature conditions needed for specific reaction equilibria.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( T \) — Temperature (Kelvin)
• \( G \) — Gibbs Free Energy (Joules)
• \( [R] \) — Universal gas constant (8.314 J/mol·K)
• \( K_c \) — Equilibrium Constant (mol/m³)

Explanation: The formula relates the thermodynamic driving force (Gibbs energy) to the equilibrium position at a given temperature.

3. Importance of Temperature Calculation

Details: Knowing the reaction temperature helps in designing chemical processes, predicting reaction feasibility, and optimizing conditions.

4. Using the Calculator

Tips: Enter Gibbs free energy in Joules and equilibrium constant in mol/m³. The equilibrium constant must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is Gibbs Free Energy?
A: It's a thermodynamic potential that measures the maximum reversible work a system can perform at constant temperature and pressure.

Q2: What units should I use for the equilibrium constant?
A: The calculator expects K_c in mol/m³. Convert if using different units.

Q3: Why is the natural logarithm not used?
A: The formula uses base-10 logarithm (log₁₀) as it's commonly used in equilibrium constant expressions.

Q4: Can I use this for any reaction?
A: Yes, as long as you have accurate values for ΔG and K_c at the desired conditions.

Q5: What does a negative temperature result mean?
A: Negative temperature values are physically impossible. This indicates an error in input values or that the reaction is not feasible.