Write a molecular equation for the precipitation reaction (if any) that occurs when the following solutions...

Write a molecular equation for the precipitation reaction (if any) that occurs when the following solutions are mixed. If no reaction occurs write noreaction. Express answer as a chemical equation Identify all the phases in answer.

A. Sodium carbonate and lead (ll) nitrate

B. Potassium sulfate and lead (ll) acetate

C. Copper (ll) nitrate and barium sulfide

D. Copper nitrate and sodium iodide

Solutions

Expert Solution

A. Pb(NO₃)₂ (aq) + Na₂CO₃ (aq) -------> PbCO₃ (s) + 2NaNO_3.(aq)

Lead (ll) nitrate Sodium carbonate Lead carbonate Sodium nitrate

(ppt.)

Lead (II) nitrate reacts with sodium carbonate to produce lead (II) carbonate precipitate and sodium nitrate. It is a double displacement reaction.

B. K₂SO₄ (aq) + Pb(C₂H₃O₂)₂ (aq) --------> PbSO₄ (s) + 2KC₂H₂O₂ (aq)

Potassium sulfate Lead acetate Lead sulfate (ppt.) Potassium acetate

Potassium sulfate reacts with lead (II) acetate to produce lead (II) sulfate precipitate and potassium acetate. It is a double displacement reaction.

C. Cu(NO₃)₂ (aq) + BaS(aq) → CuS(s) + Ba(NO₃)₂ (aq)

Copper nitrate Barium sulfide Copper sulfide (ppt.) Barium nitrate

Copper (ll) nitrate reacts with barium sulfide to produce copper (II) sulfide precipitate and Barium nitrate. t is a double displacement reaction.

D. 2Cu(NO₃)₂ (aq) + 4 NaI (aq) ----------> 2CuI (s) + I₂ (s) + 4NaNO₃ (aq)

Copper nitrate and sodium iodide reacts to form precipitate of copper iodide. It is a redox reaction.

queen_honey_blossom answered 6 months ago

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