Question

which among the following changes are exothermic or endothermic in nature?
1. Decomposition of ferrous sulphate
2. Dilution of sulphuric acid
3. Dissolution of sodium hydroxide in water
4. Dissolution of ammonium chloride in water

Answer 1

1st one is endothermic in nature.

2nd one is exothermic process .

3rd one is exothermic in nature..

4th one is endothermic process

Answer 2

i) Endothermic reaction

ii) Exothermic reaction

iii) Exothermic reaction

iv) Endothermic reaction