Solubility Rules

Presentation

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Chemistry

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11th - 12th Grade

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Practice Problem

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Medium

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NGSS

HS-ESS2-5, HS-PS1-3

Standards-aligned

Kristy Hilt

Used 44+ times

FREE Resource

5 Slides • 23 Questions

Solubility Rules

By Mrs. Hilt

Students will be able to...

understand the rules of solubility
determine the solubility of a substance (in water)

Objectives

Multiple Choice

True or False

All salts are ionic compounds.

True

False

Multiple Choice

True or False

All ionic compounds are polar.

True

False

Multiple Choice

True or False

Water is polar.

True

False

Multiple Choice

What best describes a substance that is soluble?

A substance that does not dissolve in another substance.

A substance that dissolves in another substance.

Multiple Choice

What best describes a substance that is insoluble?

A substance that does not dissolve in another substance.

A substance that dissolves in another substance.

Below are some mnemonic tricks for remembering the solubility rules.

HOWEVER, the rules are also listed on the back of the blue Periodic Tables you use on tests & quizzes!

No memorization needed, but you do need to know how to use the rules.

Rules of Solubility

Solubility Rues: Soluble Ions

Example: CaCl₂ is aqueous, but CaSO₄ is insoluble in water.

Ag⁺, Pb²⁺, Hg₂²⁺

Ag⁺, Ca²⁺, Sr²⁺, Ba²⁺, Pb²⁺

Exceptions

INSOLUBLE when combined with _____.

GROUP 1 (Li⁺, Na⁺, K⁺, Rb⁺, Cs⁺)

Ammonium (NH₄⁺)

Nitrate (NO₃^-)

Acetate (C₂H₃O₂^-)

Bicarbonate (HCO₃^-)

Chlorate (ClO₃^-)

Perchlorate (ClO₄^-)

GROUP 17 Halide (F^-, Cl^-, Br^-, I^-)

Sulfate (SO₄^2-)

Ions that form Soluble (aq) Compounds

Solubility Rues: Insoluble Ions

Example: Na₂CO₃ is aqueous, but CaCO₃ is insoluble in water.

Group 1 ions or ammonium

Group 1 ions, ammonium, Ca²⁺, Mg²⁺

Group 1 ions or ammonium

Group 1 ions, ammonium, Ca²⁺, Sr²⁺, Ba²⁺

Exceptions

SOLUBLE when combined with _____.

Carbonate (CO₃^2-)

Chromate (CrO₄^2-)

Phosphate (PO₄^3-)

Sulfide (S^2-)

Hydroxide (OH^-)

Ions that form Insoluble (s) Compounds

Multiple Choice

Identify if the following would be soluble or insoluble in water:

NaNO₃

Soluble

Insoluble

Multiple Select

Why is NaNO₃ soluble?

Nitrates are soluble

Group 1 ions are soluble

Nitrate ions are never soluble, but this is an exception

Group 1 ions are never soluble, but this is an exception

Multiple Choice

Identify if the following would be soluble or insoluble in water:

Iron (II) carbonate

Soluble

Insoluble

Multiple Choice

Why is iron (II) carbonate insoluble?

Iron is always insoluble

Carbonate is insoluble and iron is not an exception

Carbonate is soluble, but iron is an exception

Transition metals are always insoluble

Multiple Choice

Identify if the following would be soluble or insoluble in water:

MgCrO₄

Soluble

Insoluble

Multiple Choice

Why is MgCrO₄ soluble?

Magnesium is always soluble

Chromate is soluble and magnesium is not an exception

Chromate is insoluble, but magnesium is an exception

Group 1 metals are always soluble

Multiple Choice