Question

with the help of a balanced chemical reaction. 1. an endothermic reaction,2. an exothermic reaction, 3. a photochemical reaction,4. an electrochemical reaction​

Answer 1

Answer:

1. endothermic - CaCO3 (when heated) → CO2 + CaO

2. exothermic - C6H12O6 → CO2 + H2O + energy (ATP)

3. photochemical - 2AgCl (sunlight) → 2Ag + Cl2

4. electrochemical - 2H2O (electricity) → 2H2 + O2 or 2H+ + O2-