Month: August 2025
How does thermochemistry apply to real-world energy sources?
Thermochemistry is the study of heat changes in chemical reactions, and it directly applies to…
What is a heat of reaction?
The heat of reaction is the amount of heat absorbed or released during a chemical…
How does phase change relate to thermochemistry?
Phase changes, such as melting, boiling, freezing, or condensation, are closely related to thermochemistry because…
What is the relationship between enthalpy, entropy, and free energy?
The relationship between enthalpy (H), entropy (S), and free energy (G) is central in thermodynamics,…
How do you determine if a reaction is spontaneous?
To determine if a reaction is spontaneous, you look at the Gibbs free energy change…
What is Gibbs free energy (ΔG)?
Gibbs free energy (ΔG) is a thermodynamic quantity that predicts whether a chemical reaction or…
How does entropy relate to the second law of thermodynamics?
Entropy is directly connected to the second law of thermodynamics, which states that: In any…
What is entropy (S)?
Entropy (S) is a measure of the disorder or randomness in a system. It tells…
What is the standard enthalpy of formation?
The standard enthalpy of formation is the heat change that occurs when one mole of…