The Standard Reaction Free Energy Calculator is a crucial tool used in chemistry to determine the standard free energy change (∆G°) for a chemical reaction. It calculates the energy difference between the products and reactants involved in a reaction under standard conditions.
Formula of Standard Reaction Free Energy Calculator
The formula for calculating the standard reaction free energy (∆G°) is:
ΔG° = ΣΔG°f(products) – ΣΔG°f(reactants)
Where:
- ΔG° represents the standard reaction free energy.
- ΣΔG°f(products) is the summation of the standard Gibbs free energy of formation (∆G°f) for all the products involve in the reaction.
- ΣΔG°f(reactants) is the summation of the standard Gibbs free energy of formation (∆G°f) for all the reactants involve in the reaction.
General Terms Table or Relevant Information
| Term | Description |
|---|---|
| Standard Conditions | Defined pressure (1 atm) and temperature (298 K or 25°C) |
| ΔG°f | Standard Gibbs free energy of formation |
| ∆G° | Standard reaction free energy |
The table above contains general terms commonly searched, offering users a quick reference without the need for repeated calculations.
Example of Standard Reaction Free Energy Calculator
Let’s consider the reaction where hydrogen and oxygen combine to form water:
2 H₂(g) + O₂(g) → 2 H₂O(l)
To calculate the ∆G° for this reaction, we determine the ∆G°f values for the products and reactants involved and then apply the formula.
Most Common FAQs
A: ∆G°f values are tabulate and available in reference books or online databases for various substances.
A: Standard conditions refer to a defined set of conditions used as a reference point for chemical reactions, typically at 1 atmosphere pressure and 25°C (298 K).
A: The calculator computes the standard reaction free energy. Adjustments must be made using the relationship between standard and non-standard conditions.