Salt Preparation I

When can we use the precipitation method to prepare a salt?

• When the salt is an insoluble salt

• When the salt is a soluble salt

How can I prepare a sample of copper(II) sulfate?

• Add excess Cu metal to H₂SO₄

• Add Cu(NO₃)₂ (aq) to Na₂SO₄(aq)

• Add excess CuCO₃ to H₂SO₄

• Titrate Cu(OH)₂ to NaOH

How can I prepare a sample of lead(II) nitrate?

• Add excess Pb metal to HNO₃

• Titrate HNO₃ with excess Pb(OH)₂

• Add excess PbCl₂ to HNO₃

• Add PbO to excess HNO₃

How can I prepare a sample of lead(II) chloride?

• Add excess Pb metal to HCl

• Add HCl with excess Pb(OH)₂

• Add excess Pb(NO₃)₂ to HCl

• Add excess Pb(NO₃)₂ to AgCl

After adding FeO with HNO₃, what is my next step to prepare Fe(NO₃)₂ crystals?

• Filtration to get the residue

• Filtration to get the filtrate

• Evaporation to dryness

• Crystallisation

After adding Ca(NO₃)₂ with H₂SO₄, what is my next step to prepare CaSO₄ crystals?

• Filtration to get the residue

• Filtration to get the filtrate

• Evaporation to dryness

• Crystallisation

After adding Cu(OH)₂ with H₂SO₄, what is my next step to prepare CuSO₄ crystals?

• Filtration to get the residue

• Filtration to get the filtrate

• Evaporation to dryness

• Crystallisation

How can I prepare a sample of potassium chloride?

• Add HCl to K metal

• Ttrate HCl to KOH once with indicator, then again without

• Titrate HCl to KOH with indicator

• Add KNO₃ (aq) to NaCl(aq)

How can I prepare a sample of zinc sulfate?

• Add excess Zn metal to H₂SO₄

• Titrate H₂SO₄ with Zn(OH)₂

• Add Zn(NO₃)₂ (aq) to Na₂SO₄(aq)

• Add excess ZnCl₂ to H₂SO₄