Question

consider the following reactions Reaction 1: 2H2o electricity ___________> Reaction 2: 2Agcl sunlight__________>2Ag+cl2 categorize these reactions as exothermic or endothermic reactions.Reaction1: ~~~~~~~~____________ Reaction 2: __________​

Answer 1

When electricity passes through water it decomposes to form hydrogen and oxygen.

this is an electolytic decomposition reaction.

When Silver chloride is exposed to sunlight it decomposes to for silver metal with the liberation of chlorine gas.

This is a photolytic decomposition reaction.

All decomposition reactions are endothermic since energy is absorbed in some form.

therefore, both the reactions to be considered are endothermic.

there you go :)