Topical Questions
These questions are keyed to major topics in the chapter. Usually a question that is answered at the back of this book is paired with a similar one that is not.
Once ignited, magnesium reacts vigorously with oxygen in air according to the equation
2 Mg(s) + O2(g) → 2 MgO(s)
(a) Predict the signs of ΔH° and ΔS° for the reaction.
(b) Verify your predictions with calculations.
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