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Chemistry: Definition and Properties of Salt

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Questions and Answers

What is the definition of a salt?

A compound formed by replacing a metallic ion with a hydrogen ion
A compound formed by replacing a hydrogen ion with a metallic ion (correct)
A compound formed by replacing an ammonium ion with a metallic ion
A compound formed by replacing a metallic ion with an ammonium ion

Which statement about the solubility of nitrates is true?

All nitrates are soluble in water (correct)
Most nitrates are insoluble in water
Only ammonium nitrate is soluble
Only lead(II) nitrate is soluble

What determines whether a salt will be soluble or not?

The color of the salt crystal
The solubility of the salt in water (correct)
The shape of the salt crystal
The nature of the acid used to form the salt

Which group of compounds are generally insoluble?

Lead(II) sulphate, barium sulphate, and calcium sulphate (A) Signup and view all the answers

What does it mean when a solution is saturated?

It contains the maximum mass of the solute that can dissolve at that temperature (B) Signup and view all the answers

What do solubility curves show?

How the solubility of a substance varies with temperature (C) Signup and view all the answers

What is the purpose of heating the mixture in a hot water bath until all the solute dissolves in the practical method described?

To increase the solubility of the solute (D) Signup and view all the answers

In the method for making soluble salts, which of the following reactants can be used to produce the desired salt?

A metal like Fe (B) Signup and view all the answers

What is the general method for preparing insoluble salts?

Choosing two solutions containing cations and anions required for the salt (B) Signup and view all the answers

Which of the following is NOT a method for preparing soluble salts?

Reacting a metal carbonate with water (D) Signup and view all the answers

In the preparation of an insoluble salt BaSO4, which ions are involved in the ionic equation?

Ba2+ and SO42- (B) Signup and view all the answers

What is involved in the preparation of soluble salts by direct combination?

Reacting two non-metals directly with each other (A) Signup and view all the answers

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