Topic Details (Notes format)

Spontaneity of Reactions

Subject: Chemistry

Book: General Chemistry

A reaction is spontaneous if it can proceed without external intervention. The Gibbs free energy change (ΔG) is key: negative ΔG indicates spontaneity, positive ΔG indicates nonspontaneity, and ΔG = 0 indicates equilibrium. Temperature can alter spontaneity if ΔH and ΔS have the same sign. Spontaneity does not imply reaction speed; a reaction can be thermodynamically favorable but kinetically slow.

Practice Questions

Which element is represented by the symbol 'Na'?

View Question

What is the chemical formula for ethanol?

View Question

What is the chemical formula for nitric acid?

View Question

Which element has the atomic number 92?

View Question

What is the chemical formula for uranium hexafluoride?

View Question

What is the chemical name for CH4?

View Question

Which acid is often referred to as the "king of chemicals"?

View Question

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

View Question

Which element is used in thermometers?

View Question

Which element is essential for thyroid function?

View Question