For each of the following, write a net ionic equation (modeled above). Wherever there is a precipitate, state the name of the precipitate (e.g “lead iodide” from above). Pop onto the net and see if you can find a description of the physical properties (e.g colour) of this precipitate.

Question

For each of the following, write a net ionic equation (modeled above). Wherever there is a precipitate, state the name of the precipitate (e.g “lead iodide” from above). Pop onto the net and see if you can find a description of the physical properties (e.g colour) of this precipitate.

IS THIS CORRECT?

1. Mixing solutions of sodium bromide with magnesium nitrate
Net ionic equation: Na+(aq) + Br(aq) + Mg+2(aq) + NO3-(aq)  no rxn
Precipitate: N/A

2. Mixing solutions of barium acetate with sodium phosphate
Net ionic equation: Ba+2(aq) + CH3COO-(aq) + Na+(aq) + PO4-3(aq)  no rxn

3. Mixing solutions of thallium sulphate with magnesium chloride
Net ionic equation: Te+(aq) + SO32-(aq) + Mg2+(aq) + Cl-(aq)  Te+(aq) + Cl-(aq) + MgSO3 (s)
Precipitate: Yes

4. Mixing solutions of strontium chloride with copper sulphate
Net ionic equation: Sr2+(aq) + Cl-(aq) + Cu+(aq) + SO3-2(aq)  Cl-(aq) + Cu+(aq) + SrSO3(s)
Precipitate: Yes

5. Mixing solutions of copper acetate with potassium chloride
Net ionic equation: Cu+(aq) + CH3COO-(aq) + K+(aq) + Cl-(aq)  no rxn
Precipitate: N/A

Answer 1

1. Mixing solutions of sodium bromide with magnesium nitrate

Net ionic equation: Na+(aq) + Br(aq) + Mg+2(aq) + NO3-(aq)  no rxn
Precipitate: N/A
This looks ok.

2. Mixing solutions of barium acetate with sodium phosphate
Net ionic equation: Ba+2(aq) + CH3COO-(aq) + Na+(aq) + PO4-3(aq)  no rxn
Isn't Ba3(PO4)2 insoluble?

3. Mixing solutions of thallium sulphate with magnesium chloride
Net ionic equation: Te+(aq) + SO32-(aq) + Mg2+(aq) + Cl-(aq)  Te+(aq) + Cl-(aq) + MgSO3 (s)
Precipitate: Yes
Thallium isn't Te. sulfate isn't SO4^-2. Yes is correct but the question asks you to name the ppt.

4. Mixing solutions of strontium chloride with copper sulphate
Net ionic equation: Sr2+(aq) + Cl-(aq) + Cu+(aq) + SO3-2(aq)  Cl-(aq) + Cu+(aq) + SrSO3(s)
Precipitate: Yes
copper sulphate is CuSO4. The ppt is SrSO4 and it is white.

5. Mixing solutions of copper acetate with potassium chloride
Net ionic equation: Cu+(aq) + CH3COO-(aq) + K+(aq) + Cl-(aq)  no rxn
Precipitate: N/A
copper(II) acetate is Cu(CH3COO)2.

Answer 2

3. Mixing solutions of thallium sulphate with magnesium chloride

Net ionic equation: Te+(aq) + SO32-(aq) + Mg2+(aq) + Cl-(aq)  Te+(aq) + Cl-(aq) + MgSO3 (s)
Precipitate: Yes
Thallium isn't Te. sulfate isn't SO4^-2. Yes is correct but the question asks you to name the ppt.
oops. Thallium isn't Te. sulfate isn't SO3^-2. It is SO4^-2.

Answer 3

1. The net ionic equation and the statement that there is no reaction is correct.

2. The net ionic equation is correct, but it should be noted that there is no reaction and no precipitate formed.
3. The net ionic equation is correct, and there is a precipitate formed which is magnesium sulfite (MgSO3).
4. The net ionic equation is correct, and there is a precipitate formed which is strontium sulfite (SrSO3).
5. The net ionic equation is correct, and there is no reaction and no precipitate formed.

Answer 4

Let's check the answers:

1. Mixing solutions of sodium bromide with magnesium nitrate:
The net ionic equation provided is correct. When sodium bromide (NaBr) and magnesium nitrate (Mg(NO3)₂) are mixed, there is no reaction or formation of a precipitate. Thus, there is no precipitate formed, so the answer is correct.

2. Mixing solutions of barium acetate with sodium phosphate:
The net ionic equation provided is correct. When barium acetate (Ba(CH₃COO)₂) and sodium phosphate (Na₃PO₄) are mixed, there is also no reaction or formation of a precipitate. Therefore, there is no precipitate formed, so the answer is correct.

3. Mixing solutions of thallium sulfate with magnesium chloride:
The net ionic equation provided is correct. When thallium sulfate (Tl₂SO₄) and magnesium chloride (MgCl₂) are mixed, the thallium ions (Te⁺) combine with the sulfate ions (SO₃²⁻) to form thallium sulfate (Te⁺ + SO₃²⁻ → Te⁺ + Cl⁻ + MgSO₃(s)). In this reaction, a precipitate of magnesium sulphite (MgSO₃) is formed. Therefore, the answer is correct.

4. Mixing solutions of strontium chloride with copper sulfate:
The net ionic equation provided is correct. When strontium chloride (SrCl₂) and copper sulfate (CuSO₄) are mixed, the strontium ions (Sr²⁺) combine with the sulfate ions (SO₄²⁻) to form strontium sulphite (Sr²⁺ + SO₄²⁻ → Cl⁻ + Cu⁺ + SrSO₃(s)). In this reaction, a precipitate of strontium sulphite (SrSO₃) is formed. Therefore, the answer is correct.

5. Mixing solutions of copper acetate with potassium chloride:
The net ionic equation provided is correct. When copper acetate (Cu(CH₃COO)₂) and potassium chloride (KCl) are mixed, there is no reaction or formation of a precipitate. Thus, there is no precipitate formed, so the answer is correct.

In conclusion, the provided net ionic equations and identification of precipitates are correct for all the given cases.