Two reactions are carried out. 1. Hydrated cobalt(II) chloride is warmed. Its colour alters. 2. Water is then added to the product from reaction 1. The mixture gets hotter. The initial colour is seen again. Which types of reaction occurred in reactions 1 and 2?
- Aendothermic ✓, exothermic ✓, neutralisation ✓, reversible ✓
- Bendothermic ✓, exothermic ✓, neutralisation ✓, reversible ✗
- Cendothermic ✓, exothermic ✓, neutralisation ✗, reversible ✓
- Dendothermic ✓, exothermic ✗, neutralisation ✗, reversible ✓