Electrolysis of Brine

1.

Multiple Choice

30 sec

1 pt

Which one of the following metal is not extracted by electrolysis?

Aluminium

Iron

Sodium

Potassium

2.

Multiple Choice

30 sec

1 pt

What is the name of the positive electrode?

cathode

anode

3.

Multiple Choice

30 sec

1 pt

When NaCl solution is electrolysed what has forms at the anode?

Hydrogen

Oxygen

Chlorine

Sodium

4.

Multiple Choice

30 sec

1 pt

In the electrolysis of brine what product do we get at the cathode?

hydrogen gas

oxygen gas

sodium metal

chlorine gas

5.

Multiple Choice

30 sec

1 pt

Which are the useful products of electrolysis of brine?

sodium hydroxide, chlorine and hydrogen

sodium metal, oxygen and chlorine

sodium metal, chlorine and sodium hydroxide

sodium hydroxide, oxygen and hydrogen

6.

Multiple Choice

30 sec

1 pt

Explain why the electrolyte has to be a liquid.

So the ions can move

So the electrons can move

So that it doesn't get too hot

So the fish are ok

7.

Multiple Choice

30 sec

1 pt

What are the products for the electrolysis of brine?

Na, NaOH, Cl₂

H_2, NaOH, O₂

H_2, Cl₂

H_2, NaOH, Cl₂

8.

Multiple Choice

30 sec

1 pt

Which are the useful products obtained from the of electrolysis of brine?

sodium hydroxide, chlorine and hydrogen

sodium metal, oxygen and chlorine

sodium metal, chlorine and sodium hydroxide

sodium hydroxide, oxygen and hydrogen

9.

Multiple Choice

30 sec

1 pt

Give a use of hydrogen and of sodium hydroxide obtained from the electrolysis of brine.

hydrogen as a fuel, sodium hydroxide to make explosives

hydrogen as a solvent, sodium hydroxide as a fertilizer

hydrogen as a fuel, sodium hydroxide to make soap

hydrogen as a solvent, sodium hydroxide as a fertilizer

10.

Multiple Choice

30 sec

1 pt

How can chlorine and hydrogen be tested?

hydrogen and chlorine pop with a lighted splint

hydrogen and chlorine bleach blue litmus paper

hydrogen and chlorine both bleach blue litmus paper

hydrogen pops with a lighted splint, chlorine bleaches blue litmus paper

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