What is the standard Gibbs Free Energy change (ΔG°) for a reaction at standard c
Practice Questions
Q1
What is the standard Gibbs Free Energy change (ΔG°) for a reaction at standard conditions?
Always zero
Depends on the reaction
Is a constant value
Is always positive
Questions & Step-by-Step Solutions
What is the standard Gibbs Free Energy change (ΔG°) for a reaction at standard conditions?
Step 1: Understand that ΔG° is a measure of the energy change in a chemical reaction under standard conditions.
Step 2: Recognize that standard conditions usually mean a temperature of 25°C (298 K), a pressure of 1 atm, and concentrations of 1 M for all reactants and products.
Step 3: Know that ΔG° is calculated using the standard Gibbs Free Energy of formation values for the reactants and products involved in the reaction.
Step 4: Use the formula ΔG° = Σ(ΔG°_f products) - Σ(ΔG°_f reactants) to find the value.
Step 5: Remember that ΔG° can be positive, negative, or zero, indicating whether the reaction is non-spontaneous, spontaneous, or at equilibrium, respectively.
