Question

Why does methanol show an exothermic reaction with water at room temperature while it gives an endothermic reaction with water in cold conditions?

Answer 1

hey here is your answer

There are three primary phases of matter: solid, liquid and gas. A solid becoming liquid is called melting or fusion. A solid becoming gaseous is called sublimation. A liquid becoming solid is called freezing. A liquid changing to gas is called boiling or evaporation. A gas changing into a solid is called deposition, and a gas changing into a liquid is called condensation. Half of these are endothermic, meaning they absorb heat from their surroundings. The others are exothermic, meaning they release heat.

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Answer 2

A gas changing into a solid is called deposition, and a gas changing into a liquid is called condensation. ... Melting, sublimation and boiling are endothermic reactions -- one that consume energy -- while freezing and condensation are exothermic reactions, which release energy.