Question

5 examples of double decomposition reaction. ​

Answer 1

1) AgNO3 + NaCl → AgCl + NaNO3

2) BaCl2 + Na2SO4→BaSO4+2NaCl

3) Pb(NO3)2 + 2 KI → 2 KNO3+ PbI2

4) NaHCO3 + CH3COOH → H2CO3 + NaCH3COO

5) NaOH + HCl→ NaCl + H2O

Answer 2

Answer: A double decomposition reaction is a reaction in which the positive ions and negative ions in two compounds switch to form two new compounds.

Explanation:

1. Ca(OH)2 + 2 NH4Cl = CaCl2 + 2 NH4OH

2. PbCl2 + 2 KI = PbI2 + 2 KCl

3. CuSO4 + H2S = CuS + H2 SO4

4. AgNO3 + KCl = AgCl + KNO3

5. HCl + NaOH  = Nacl +H2O