WBCS.LIVE practice question

A reaction is spontaneous when

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. ΔG = –ve
  2. ΔH = –ve
  3. ΔS = +ve
  4. ΔS = –ve

Correct answer and explanation

Correct answer: ΔG = –ve

Explanation: ✅ Correct Answer: A) ΔG = –ve 📚 Explanation: In thermodynamics, a reaction is considered spontaneous if the change in Gibbs Free Energy (ΔG) is negative. This indicates that the reaction releases energy and can occur on its own without external help. A negative ΔG is the absolute criteria for spontaneity at constant temperature and pressure.