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 phosphoric acid?

View Question

What is the common name for sodium bicarbonate?

View Question

What is the chemical name for CH4?

View Question

Which element is known as quicksilver?

View Question

Which element has the atomic number 92?

View Question

Which element is a key component of DNA and RNA?

View Question

What is the chemical formula for hydrochloric acid?

View Question

Which element has the atomic number 79?

View Question

What is the chemical formula of carbon dioxide?

View Question

What is the chemical formula for sodium oxide?

View Question