Topic Details (Notes format)

Reaction Entropy

Subject: Chemistry

Book: General Chemistry

Reaction entropy (ΔSrxn) measures the change in disorder when reactants convert to products. Processes that produce more gas molecules or involve dissolution often increase entropy. Calculated from standard molar entropies, ΔSrxn guides understanding of spontaneity in combination with ΔH and temperature (using ΔG = ΔH – TΔS). Large increases in entropy can drive otherwise endothermic reactions to be spontaneous.

Practice Questions

What is the chemical formula for sodium hydroxide?

View Question

What is the pH value of pure water?

View Question

What is the chemical formula for ammonia?

View Question

What is the chemical formula for hydrochloric acid?

View Question

Which gas is used in neon signs?

View Question

Which element is the lightest in the periodic table?

View Question

Which element is represented by the symbol 'O'?

View Question

What is the process by which plants convert sunlight into chemical energy?

View Question

What is the chemical formula for sodium oxide?

View Question

Which element has the symbol 'Au'?

View Question