Solubility Rules

Predicting Lab Results using Solubility Rules

Chemistry in real life

Multiple Choice

State whether the following compound is soluble or insoluble. Lead iodide : PbI₂

• Soluble (aqueous)

• Insoluble (solid)

Multiple Choice

State whether the following compound is soluble or insoluble. Zinc hydroxide Zn(OH)₂

• Soluble (aqueous)

• Insoluble (solid)

Multiple Choice

State whether the following compound is soluble or insoluble. Potassium bromide KBr

• Soluble (aqueous)

• Insoluble (solid)

Multiple Choice

Identify the reaction type:

NaCl + KOH --> KCl + NaOH

• Double replacement

• Combustion

• Synthesis

• Decomposition

Multiple Choice

Predict the products if Calcium Carbonate reacts with Silver Sulfate.

CaCO₃ + Ag₂SO₄ → ?

• Ag₂CO₃ + CaSO₄

• AgCa+ CO₃SO₄

• CaSO₄ + Ag₂SO₄

• CaAg + SO₄CO₃

Solubility Rules can be used to determine if a chemical reaction between two aqueous solutions will produce a precipitate or not.

BaCl₂ (aq) + Pb(NO₃)₂ (aq) --> Ba (NO₃)₂ (?) + PbCl₂ (?)

Multiple Select

BaCl₂ (aq) + Pb(NO₃)₂ (aq) --> Ba (NO₃)₂ (?) + PbCl₂ (?)

According to solubility rules, what state is Ba (NO₃)₂ in?

• aqueous (soluble)

• solid (insoluble)

Multiple Select

BaCl₂ (aq) + Pb(NO₃)₂ (aq) --> Ba (NO₃)₂ (?) + PbCl₂ (?)

According to solubility rules, what state is PbCl₂ in?

• aqueous (soluble)

• solid (insoluble)

You look at the products in the reaction, to determine if a precipitate is formed. The solid that is present is the precipitate!

BaCl₂ (aq) + Pb(NO₃)₂ (aq) --> Ba (NO₃)₂ (aq) + PbCl₂ (s)

Open Ended

Which reaction below will produce a precipitate? How do you know?

Reaction A: 2KI (aq) + MgSO₄ (aq) --> K₂SO₄ (aq) + MgI₂ (aq)

Reaction B: BaCl₂ (aq) + MgSO₄ (aq) --> BaSO₄ (s) + MgCl₂ (aq)

Multiple Choice

Predict if a precipitate will form from the following reaction:

Pb(NO₃)₂ (aq) + KI (aq) --> PbI₂ (?) + KNO₃ (?)

• precipitate

• no reaction

Multiple Choice

Predict if a precipitate will form from the following reaction:

KI (aq) + NaOH (aq) --> KOH (?) + NaI (?)

• precipitate

• no reaction

Multiple Choice

Predict if a precipitate will form from the following reaction:

Pb(NO₃)₂ (aq) + 2NaOH (aq) --> Pb(OH)₂ (?) + 2NaNO₃ (?)

• precipitate

• no reaction

Multiple Choice

Pb(NO₃)₂ (aq) + KI (aq) --> PbI₂ (?) + KNO₃ (?)

What substance forms the precipitate in this reaction?

• Lead Nitrate

• Potassium Iodide

• Lead Iodide

• Potassium Nitrate

Now that you've had extensive training, let's figure out who poisoned Mr. Cole.