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14 Oxidation & Reduction Reactions MCQ2

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Questions and Answers

What is the purpose of adding chlorine to the Fe(II) solution?

To oxidize Fe(II) to Fe(III) (correct)

To remove sulfates

To form a white precipitate

To reduce Fe(III) to Fe(II)

What is the indication of the presence of Fe 3+ ions in a solution?

A red colour

A yellow colour

A white precipitate

An orange-brown precipitate (correct)

What is the outcome of adding Iron II sulphate and concentrated sulphuric acid to a solution containing nitrate ions?

A white precipitate is formed

A yellow precipitate is formed

A brown ring is formed near the bottom of the test tube (correct)

No reaction occurs

What is the result of adding ammonia to a solution containing chloride ions?

The precipitate dissolves Signup and view all the answers

What is the purpose of boiling a solution containing carbonate ions?

To liberate carbon dioxide Signup and view all the answers

What is the indication of the presence of sulfite ions in a solution?

A white precipitate that dissolves in dilute HCl Signup and view all the answers

What is the result of adding concentrated nitric acid to a solution containing phosphate ions?

No reaction occurs Signup and view all the answers

What is the definition of oxidation?

The loss of electrons Signup and view all the answers

What is the purpose of adding BaCl₂ to a sulphite solution?

To form a white precipitate Signup and view all the answers

What is the definition of a reducing agent?

A substance that loses electrons Signup and view all the answers

What is the purpose of adding dilute HCl to a sulphite solution?

To dissolve the white precipitate Signup and view all the answers