Chem2

Question 1

Front

Answer 1

Back

Question 2

What is the anode material in silver electroplating?

Answer 2

Silver rod (Ag)

Question 3

What is the cathode in this experiment?

Answer 3

The jug being plated

Question 4

Anode half-reaction in silver electroplating

Answer 4

Ag⁰(s) → Ag⁺(aq) + e⁻ (oxidation)

Question 5

Cathode half-reaction in silver electroplating

Answer 5

Ag⁺(aq) + e⁻ → Ag⁰(s) (reduction)

Question 6

Why does the anode mass decrease?

Answer 6

Silver dissolves into solution as Ag⁺ ions

Question 7

Why does the cathode mass increase?

Answer 7

Ag⁺ ions deposit as solid silver

Question 8

How does the solution concentration remain constant?

Answer 8

Ag⁺ deposited = Ag⁺ dissolved from anode

Question 9

Purpose of AgNO₃ in solution?

Answer 9

Provides Ag⁺ ions for plating

Question 10

Key observation during plating?

Answer 10

Jug becomes shiny silver-coated

Question 11

Direction of electron flow

Answer 11

Battery (-) → Cathode (jug) → Solution → Anode (Ag rod) → Battery (+)

Question 12

Industrial name for this process?

Answer 12

Electroplating/electrodeposition