The compound with most exothermic lattice energy is:
Correct answer: C. CaO
- A. CaCl2
- B. K2O
- C. CaO
- D. BaCl2
Explanation
CaO has higher lattice energy because the lattice energy increases when the charge on the atom increases. Since the size of the calcium is smaller therefore it has higher lattice energy.
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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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