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MDCAT Chemistry QUESTION #4352
Question 1
Majority of reactions taking place at ordinary temperatures with $-\Delta H$ are:
  • Endothermic
  • Exothermic✔️
  • Thermally unstable
  • Reversible
Correct Answer Explanation
Reactions with $-\Delta H$ (negative enthalpy change) release heat to the surroundings and are exothermic. Most spontaneous reactions at ordinary temperature are exothermic.