Question

1) K2 + H2O - K2O + H2SO4
2) NH4NO3 + H2O → HNO3 + (NH4)2O
3) CuSO4+ H2O -H2SO4 + CuO
4) CuSO4+Fe- FeSO4+Cu
(Identify whether reactions are exothermic or endothermic)​

Answer 1

Explanation:

1,-exothermic

2-exothermic

3-endothermic

4-exothermic

Answer 2

Answer:

3 is endothermic

and all are exothermic