Year 10 / Year 11 Electrolysis of aqueous solutions - Phoenix Hoyle | Biblioteka

4

Which ions would be in an aqueous solution of copper sulfate NaCl(aq)

3

Which ions would be in an aqueous solution of sodium chloride (aq)

4

Complete the diagram

Drugi mogući odgovor:

H₂

Cl₂

oxidation at anode

reduction at the cathode

NaCl (aq)

1

Match the product to the electrode.

1

Which electrode will be coated with copper?

1

2

3

4

1

Brine is a concentrated sodium chloride solution.

Contains Cl^-

H⁺

Na⁺

and OH^-

At the cathode 2H⁺ + 2 e⁻ → H₂ (reduction)

At the anode 2Cl⁻ → Cl₂ + 2e⁻ (oxidation).

Drugi mogući odgovor:

cathode

anode

Hydrogen gas

sodium hydroxide

4

Drugi mogući odgovor:

Cl_²

Br₂

H₂

Pb

1

A

B

C

D

4

Drugi mogući odgovor:

electrolyte

DC power source

Anode oxidation

cathode (reduction)

1

A

B

C

D

1

A

B

C

D