Problem

Classify each of the following as exothermic or endothermic and give the ΔH for each:a. Ho...

Classify each of the following as exothermic or endothermic and give the ΔH for each:

a. How many kilojoules are released when 75.0 g of methanol reacts?
2CH3OH(l) + 3O2(g) 2CO2(g) + 4H2O(l) ΔH = 726 kJ
b. How many kilojoules are absorbed when 315 g of Ca (OH)2 reacts?
Ca(OH)2(s) → CaO (s) + H2O (l) ΔH = + 65.3 kJ

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