Question

Write a balanced equation and draw an enthalpy diagram for (select if exothermic or endothermic):

[ Select ] ["endothermic", "exothermic"] combustion of one mole of methane

[ Select ] ["endothermic", "exothermic"] vaporization of liquid alcohol

[ Select ] ["exothermic", "endothermic"] freezing of liquid water

[ Select ] ["exothermic", "endothermic"] formation of 1 mole of potassium chloride from its elements (heat is released)