Ionic Compounds and Electrolytes

The video tutorial covers the concept of electrolytes and their role in solution concentration and ion formation. It distinguishes between electrolytes and non-electrolytes, explaining how electrolytes conduct electricity due to ion production. The tutorial discusses strong electrolytes, such as soluble salts and strong acids, and their complete ionization in water. It explores the relationship between solution concentration and ion ratios, providing examples with potassium chromate and barium nitrate. The video also addresses solubility rules and precipitation reactions, using barium chromate as an example. Finally, it includes practice problems to reinforce understanding of electrolyte solutions and ion concentrations.

What is a non-electrolyte?

• A substance that conducts electricity when dissolved in water.

• A substance that only conducts electricity in solid form.

• A substance that does not conduct electricity when dissolved in water.

• A substance that partially conducts electricity when dissolved in water.

Which of the following is a strong electrolyte?

• Carbon dioxide in water

• Sugar dissolved in water

• Pure water

• Hydrochloric acid in water

In a solution of potassium chromate, what is the ratio of potassium ions to chromate ions?

• 1:1

• 2:1

• 3:1

• 1:2

If you have a 1 M solution of barium nitrate, what is the concentration of nitrate ions?

• 3 M

• 2 M

• 1 M

• 0.5 M

What happens to the concentration of potassium ions if the concentration of potassium chromate is tripled?

• It quadruples.

• It remains the same.

• It doubles.

• It triples.

What is the ratio of iron(III) nitrate to potassium hydroxide in a balanced reaction?

• 2:3

• 1:2

• 1:3

• 1:1

In the reaction between iron(III) nitrate and potassium hydroxide, how many nitrate ions are produced for each iron(III) hydroxide?

• 4

• 1

• 3

• 2

Which of the following correctly represents the ion ratio in magnesium sulfate?

• 2:2

• 1:1

• 1:2

• 2:1

What is the concentration of chloride ions in a 0.5 M solution of magnesium chloride?

• 1.0 M

• 0.5 M

• 2.0 M

• 1.5 M

How many ammonium ions are produced from one ammonium sulfate molecule?

• 3

• 4

• 2

• 1