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Question 1

What is the energy change taking place in a Galvanic cell?

Answer 1

Chemical energy to Electrical energy

This transformation occurs due to spontaneous redox reactions.

Question 2

Identify the anode in the given cell.

Answer 2

Zn

The anode is the electrode where oxidation occurs.

Question 3

Write the chemical equation of the reaction taking place at the anode.

Answer 3

Zn → Zn²⁺ + 2e⁻

This equation represents the oxidation of zinc at the anode.

Question 4

In which electrode does oxidation take place?

Answer 4

At Anode

The anode is defined as the site of oxidation in electrochemical cells.

Question 5

Write the chemical equation of the redox reaction in the cell.

Answer 5

Zn + Cu²⁺ → Zn²⁺ + Cu

This equation indicates the overall redox process occurring in the cell.

Question 6

Which is the electrolyte used in electroplating copper on an iron ring?

Answer 6

CuSO₄

Copper sulfate is commonly used in electroplating processes.

Question 7

In which beaker does the displacement reaction take place?

Answer 7

Beaker A

Displacement occurs because Zn is more reactive than Cu.

Question 8

Write down the chemical equation of the oxidation reaction taking place in Beaker A.

Answer 8

Zn → Zn²⁺ + 2e⁻

This equation represents the oxidation of zinc in the displacement reaction.

Question 9

What is the order of reactivity of metals as mentioned?

Answer 9

Zn > Cu > Ag

This order indicates that zinc is more reactive than copper, which in turn is more reactive than silver.

Question 10

What is the order of reactivity in the given diagram involving Mg and Cu?

Answer 10

Mg > Cu

This indicates magnesium is more reactive than copper.

Question 11

At which electrode does oxidation take place in the Galvanic cell represented in the diagram?

Answer 11

At Anode

In Galvanic cells, oxidation always occurs at the anode.