Double Displacement Reactions:
1. Reaction between Sodium Chloride and Silver Nitrate:
NaCl (aq) + AgNO3 (aq) → AgCl (s) + NaNO3 (aq)
In this reaction, sodium chloride and silver nitrate react to form silver chloride and sodium nitrate. The ions in the reactants exchange to form new compounds.
2. Reaction between Potassium iodide and Lead(II) Nitrate:
2KI (aq) + Pb(NO3)2 (aq) → 2KNO3 (aq) + PbI2 (s)
Potassium iodide and lead(II) nitrate react to form potassium nitrate and lead iodide. The positive ions in the reactants switch places to form the products.
3. Reaction between Barium Chloride and Sodium Sulfate:
BaCl2 (aq) + Na2SO4 (aq) → BaSO4 (s) + 2NaCl (aq)
Barium chloride and sodium sulfate react to form barium sulfate and sodium chloride. The cations in the reactants exchange to produce the new compounds.
4. Reaction between Calcium Hydroxide and Phosphoric Acid:
3Ca(OH)2 (aq) + 2H3PO4 (aq) → Ca3(PO4)2 (s) + 6H2O (l)
Calcium hydroxide and phosphoric acid react to form calcium phosphate and water. The positive ions in the reactants swap to form the products.
5. Reaction between Iron(III) Chloride and Sodium Hydroxide:
FeCl3 (aq) + 3NaOH (aq) → Fe(OH)3 (s) + 3NaCl (aq)
Iron(III) chloride and sodium hydroxide react to form iron(III) hydroxide and sodium chloride. The cations in the reactants exchange to produce the new compounds.