T3 PS - Electrochemical Reactions

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Solutions, such as solution X, are always used in electrochemical cells.

What is the general term used to describe these solutions.

• Electrolyte

• Electrons

• Photons

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Solutions, such as solution X, are always used in electrochemical cells.

What is the function of these solutions in electrochemical cells?

• conduct electricity

• Carry photons

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Solutions, such as solution X, are always used in electrochemical cells.

What is the FORMULA for solution X?

• Cu(NO₃)₂

• CU₂NO₃

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Solution X is Cu(NO₃)₂

Which electrode (A or IRON ROD) is the negative electrode? What is the reason for the answer

• Iron rod - Reduction takes place

• Iron rod - Ionization takes place

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Solution X is Cu(NO₃)₂

What is the formula for the half reaction that takes place at electrode A.

• $Cu\ \rightarrow\ Cu^{2+}\ 2e^-$

• Cu2+ + 2e- ← Cu

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Solution X is Cu(NO₃)₂

Electrode A is replaced by a silver rod without making any other changes to the cell. After a while, TWO metallic ions are found to be present in the solution.

What are the TWO metallic ions present in the solution?

• Copper(II) ions

• Silver ions

• copper ions

The definition of a reducing agent in terms of electron transfer.

• A substance that loses electrons.

• A substance that gains electrons

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Name of a substance that should be used as electrode in the anode half-cell.

• Platinum

• Silver

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What is the NAME or FORMULA of the reducing agent.

• Sn²⁺

• Sn⁴⁺

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What is the cell notation of the cell.

• Pt | Sn²⁺(aq) , Sn⁴⁺(aq) || Ag⁺ (aq) | Ag(s)

• Pt | Sn²⁺(aq) , Sn⁺(aq) || Ag⁺ (aq) | Ag(s)