Question

Consider the following reactions. (Note: (s) = solid, (l) = liquid, and (g) = gas.)

Mg(s) + ½O2(g) → MgO(s) + 146 kcal/mole
H2(g) + ½O2(g) → H2O(g), ΔH = -57.82 kcal/mole
The temperature of the surroundings will:
A: increase
B: decrease

Answer 1

A: increase

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