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5. Energetics & thermochemistry

For each question choose the answer you consider to be the best.1. Which is an exothermic process? A. K(s) → K(g)B. H2O(l) → H+(aq) + OH–(aq)C. Cl(g) + e– → Cl–(g) D. Mg(g) → Mg+(g) + e–2. When some solid ammonium nitrate was dissolved in water the temperature decreasedfrom 22 oC to 3 oC. What can be deduced from this observation?

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