Reactions in Aqueous Solution Round 2

Question 1

Flashcard 11:
Front: Write the dissociation equation for K₂CO₃ (Potassium carbonate) in water.
Back:
K₂CO₃ (aq) → 2K⁺ (aq) + CO₃²⁻ (aq)

Flashcard 12:
Front: Choose two chemicals that, when mixed in aqueous solutions, will produce a precipitate:
a) NaOH (Sodium hydroxide)
b) Cu(NO₃)₂ (Copper(II) nitrate)
c) K₂SO₄ (Potassium sulfate)
d) Ba(NO₃)₂ (Barium nitrate)
Back: NaOH and Cu(NO₃)₂ will form a precipitate of Cu(OH)₂ (Copper(II) hydroxide), which is insoluble in water.

Question 2

Flashcard 1:
Front: Predict whether the following compound will be soluble in water: BaSO₄ (Barium sulfate)
Back: BaSO₄ is insoluble in water. According to the solubility rules, most sulfate salts are soluble, but barium sulfate is an exception.

Flashcard 2:
Front: Write the dissociation equation for Na₂SO₄ (Sodium sulfate) in water.
Back:
Na₂SO₄ (aq) → 2Na⁺ (aq) + SO₄²⁻ (aq)

Flashcard 3:
Front: Choose two chemicals that, when combined in aqueous solutions, will form a precipitate:
a) NaCl (Sodium chloride)
b) AgNO₃ (Silver nitrate)
c) KNO₃ (Potassium nitrate)
d) BaCl₂ (Barium chloride)
Back: AgNO₃ and BaCl₂ will form a precipitate of BaSO₄ (Barium sulfate). This happens because barium sulfate is insoluble in water.

Flashcard 4:
Front: Predict whether the following compound will be soluble in water: Mg(OH)₂ (Magnesium hydroxide)
Back: Mg(OH)₂ is insoluble in water. According to solubility rules, most hydroxides are insoluble except those of alkali metals and some alkaline earth metals.

Flashcard 5:
Front: Write the dissociation equation for CaCl₂ (Calcium chloride) in water.
Back:
CaCl₂ (aq) → Ca²⁺ (aq) + 2Cl⁻ (aq)

Flashcard 6:
Front: Choose two chemicals that will form a precipitate when mixed in aqueous solutions:
a) Na₂CO₃ (Sodium carbonate)
b) CuSO₄ (Copper(II) sulfate)
c) NaNO₃ (Sodium nitrate)
d) Pb(NO₃)₂ (Lead(II) nitrate)
Back: Na₂CO₃ and Pb(NO₃)₂ will form a precipitate of PbCO₃ (Lead(II) carbonate). Lead(II) carbonate is insoluble in water.

Flashcard 7:
Front: Write the dissociation equation for NaCl (Sodium chloride) in water.
Back:
NaCl (aq) → Na⁺ (aq) + Cl⁻ (aq)

Flashcard 8:
Front: Predict whether the following compound will be soluble in water: AgCl (Silver chloride)
Back: AgCl is insoluble in water. Most chloride salts are soluble, but silver chloride is an exception and is poorly soluble.

Flashcard 9:
Front: Choose two chemicals that, when combined, will not form a precipitate:
a) Na₂SO₄ (Sodium sulfate)
b) AgNO₃ (Silver nitrate)
c) NaCl (Sodium chloride)
d) KNO₃ (Potassium nitrate)
Back: Na₂SO₄ and KNO₃ will not form a precipitate. Both are soluble in water, and no insoluble compounds are formed.

Flashcard 10:
Front: Predict whether the following compound will be soluble in water: PbSO₄ (Lead(II) sulfate)
Back: PbSO₄ is insoluble in water. Lead sulfate is an exception to the general rule for sulfates and does not dissolve well in water.

Question 3

Flashcard 1:
Front: Predict whether the following compound will be soluble in water: K₂SO₄ (Potassium sulfate)
Back: K₂SO₄ is soluble in water. Most potassium salts are soluble.

Flashcard 2:
Front: Write the dissociation equation for Li₂SO₄ (Lithium sulfate) in water.
Back:
Li₂SO₄ (aq) → 2Li⁺ (aq) + SO₄²⁻ (aq)

Flashcard 3:
Front: Choose two chemicals that, when combined in aqueous solutions, will form a precipitate:
a) Na₂S (Sodium sulfide)
b) NaCl (Sodium chloride)
c) ZnSO₄ (Zinc sulfate)
d) CuCl₂ (Copper(II) chloride)
Back: Na₂S and CuCl₂ will form a precipitate of CuS (Copper(II) sulfide), which is insoluble in water.

Flashcard 4:
Front: Write the dissociation equation for NH₄NO₃ (Ammonium nitrate) in water.
Back:
NH₄NO₃ (aq) → NH₄⁺ (aq) + NO₃⁻ (aq)

Flashcard 5:
Front: Predict whether the following compound will be soluble in water: CaSO₄ (Calcium sulfate)
Back: CaSO₄ is slightly soluble in water. It is considered to have low solubility and often forms a precipitate in water.

Flashcard 6:
Front: Choose two chemicals that, when combined in aqueous solutions, will produce a precipitate:
a) Na₂CO₃ (Sodium carbonate)
b) BaCl₂ (Barium chloride)
c) NaNO₃ (Sodium nitrate)
d) Pb(NO₃)₂ (Lead(II) nitrate)
Back: Na₂CO₃ and Pb(NO₃)₂ will form a precipitate of PbCO₃ (Lead(II) carbonate), which is insoluble in water.

Flashcard 7:
Front: Write the dissociation equation for KOH (Potassium hydroxide) in water.
Back:
KOH (aq) → K⁺ (aq) + OH⁻ (aq)

Flashcard 8:
Front: Predict whether the following compound will be soluble in water: Na₂S (Sodium sulfide)
Back: Na₂S is soluble in water. Most salts of alkali metals are soluble, and sulfides of alkali metals are soluble as well.

Flashcard 9:
Front: Choose two chemicals that, when combined in aqueous solutions, will form a precipitate:
a) NaCl (Sodium chloride)
b) AgNO₃ (Silver nitrate)
c) NaNO₃ (Sodium nitrate)
d) BaSO₄ (Barium sulfate)
Back: AgNO₃ and NaCl will form a precipitate of AgCl (Silver chloride), which is insoluble in water.

Flashcard 10:
Front: Write the dissociation equation for Cu(NO₃)₂ (Copper(II) nitrate) in water.
Back:
Cu(NO₃)₂ (aq) → Cu²⁺ (aq) + 2NO₃⁻ (aq)

Flashcard 11:
Front: Predict whether the following compound will be soluble in water: Mg(OH)₂ (Magnesium hydroxide)
Back: Mg(OH)₂ is insoluble in water. Most hydroxides are insoluble, except those of alkali metals and some alkaline earth metals like calcium and magnesium.

Flashcard 12:
Front: Choose two chemicals that, when combined in aqueous solutions, will form a precipitate:
a) Na₃PO₄ (Sodium phosphate)
b) Ba(NO₃)₂ (Barium nitrate)
c) NaCl (Sodium chloride)
d) Pb(NO₃)₂ (Lead(II) nitrate)
Back: Na₃PO₄ and Pb(NO₃)₂ will form a precipitate of Pb₃(PO₄)₂ (Lead phosphate), which is insoluble in water.

Flashcard 13:
Front: Write the dissociation equation for K₂CO₃ (Potassium carbonate) in water.
Back:
K₂CO₃ (aq) → 2K⁺ (aq) + CO₃²⁻ (aq)

Flashcard 14:
Front: Predict whether the following compound will be soluble in water: Ag₂SO₄ (Silver sulfate)
Back: Ag₂SO₄ is slightly soluble in water. Silver sulfate is a borderline case and has low solubility.

Flashcard 15:
Front: Choose two chemicals that, when combined in aqueous solutions, will form a precipitate:
a) NaOH (Sodium hydroxide)
b) FeCl₃ (Iron(III) chloride)
c) KNO₃ (Potassium nitrate)
d) CuSO₄ (Copper(II) sulfate)
Back: FeCl₃ and NaOH will form a precipitate of Fe(OH)₃ (Iron(III) hydroxide), which is insoluble in water.

Flashcard 16:
Front: Write the dissociation equation for Na₂CO₃ (Sodium carbonate) in water.
Back:
Na₂CO₃ (aq) → 2Na⁺ (aq) + CO₃²⁻ (aq)

Flashcard 17:
Front: Predict whether the following compound will be soluble in water: CaCO₃ (Calcium carbonate)
Back: CaCO₃ is insoluble in water. Calcium carbonate is a classic example of an insoluble compound.

Flashcard 18:
Front: Choose two chemicals that, when combined in aqueous solutions, will form a precipitate:
a) NaCl (Sodium chloride)
b) BaCl₂ (Barium chloride)
c) Na₃PO₄ (Sodium phosphate)
d) FeSO₄ (Iron(II) sulfate)
Back: BaCl₂ and Na₃PO₄ will form a precipitate of Ba₃(PO₄)₂ (Barium phosphate), which is insoluble in water.

Flashcard 19:
Front: Write the dissociation equation for NH₄Cl (Ammonium chloride) in water.
Back:
NH₄Cl (aq) → NH₄⁺ (aq) + Cl⁻ (aq)

Flashcard 20:
Front: Predict whether the following compound will be soluble in water: CuS (Copper(II) sulfide)
Back: CuS is insoluble in water. Copper sulfide is an example of an insoluble sulfide.