Melting of ice at room temperature is
Correct answer: B. spontaneous endothermic process
- A. spontaneous exothermic process
- B. spontaneous endothermic process
- C. non-spontaneous exothermic process
- D. non-spontaneous endothermic process
Explanation
The melting of ice at room temperature involves the transition of solid ice into liquid water. This process requires the absorption of energy to overcome the intermolecular forces holding the ice molecules together in a solid structure. Therefore, the melting of ice is an endothermic process.Given this information, the correct answer is:b. spontaneous endothermic processEndothermic processes absorb energy from their surroundings.Melting of ice absorbs energy from the surroundings (heat) to break the intermolecular forces holding the solid ice together.The process is considered spontaneous because it occurs naturally without requiring any external force or intervention once the appropriate conditions (such as room temperature) are met.
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About Thermochemistry and Energetics of Chemical Reactions
Thermochemistry measures energy changes in chemical reactions and distinguishes exothermic from endothermic processes. Work covers systems, surroundings and state functions, internal energy, the first law of thermodynamics, enthalpy and Hess's law, including the sign conventions used when heat enters or leaves a system.
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