Complete and balance the following reactions: (i)NH4OH + HCl→ (ii)Pb(NO3)2 +HCl→ (iii)HCL + NH4OH→  (iv)NH3 + HCL→ 

Solution:

1. NH₄OH + HCl   →NH₄Cl + H₂O.
2. Pb(NO₃)₂ +HCl   →PbCl₂ +2HNO_3.
3. HCl + NH₄OH  → NH₄Cl + H₂O.
4. NH₃ + HCl  → NH₄Cl.