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Electrochemical Cells: Types and Functions

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Electrochemical Cells: Types and Functions

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Questions and Answers

What is the purpose of a salt bridge in a galvanic cell?

To generate electrical energy

To separate the two half-cells (correct)

To convert chemical energy into electrical energy

To connect the two electrodes

What type of reaction takes place in a galvanic cell?

Nuclear reaction

Electrolysis

Redox reaction (correct)

Chemical reaction

What is the name given to the Italian physicist after whom the galvanic cell is named?

André-Marie Ampère

Luigi Galvani (correct)

Michael Faraday

Alessandro Volta

What is the function of the electrodes in a galvanic cell?

To facilitate the redox reaction Signup and view all the answers

What is the purpose of the electrolytes in a galvanic cell?

To facilitate the redox reaction Signup and view all the answers

What is another name for a galvanic cell?

Voltaic cell Signup and view all the answers

What is the primary function of a salt bridge in a galvanic cell?

To prevent the mechanical mixing of the solutions Signup and view all the answers

What reaction occurs at the anode in a galvanic cell?

Oxidation of zinc to form zinc ions Signup and view all the answers

What is the purpose of the zinc metal electrode in a Daniel cell?

To act as an anode Signup and view all the answers

What is the result of the reaction at the cathode in a galvanic cell?

Deposition of copper atoms on the cathode Signup and view all the answers

What is the total cell reaction in a galvanic cell?

The sum of the anodic and cathodic reactions Signup and view all the answers

What is the best example of a galvanic cell?

Daniel cell Signup and view all the answers

What happens in an electrochemical cell?

Chemical energy is converted to electrical energy Signup and view all the answers

What type of reaction occurs in an electrochemical cell?

Spontaneous reaction Signup and view all the answers

How are the anode and cathode assigned in an electrochemical cell?

Anode is connected to the positive terminal, cathode is connected to the negative terminal Signup and view all the answers

What is the purpose of the external electrical energy in an electrolytic cell?

To bring about a non-spontaneous chemical reaction Signup and view all the answers

What is the difference in the setup of electrodes in electrochemical and electrolytic cells?

Electrochemical cells have two electrodes in separate vessels, electrolytic cells have two electrodes in one vessel Signup and view all the answers

What is the electrode potential?

The potential difference between the metal electrode and the solution Signup and view all the answers