The response of given voltaic cell when negative terminal of dry cell is attached to cathode and the positive terminal is attached to anode has to be identified. Concept Introduction: Oxidation: The gain of oxygen or the loss of hydrogen or the loss of an electron in a species during a redox reaction is called as oxidation. Reduction: The loss of oxygen or the gain of hydrogen or the gain of an electron in a species during a redox reaction is called as reduction. Oxidizing agent: The substance that is oxidized is called as a reducing agent. Reducing agent: The substance that is reduced is called as an oxidizing agent. Oxidation half-reaction: An oxidation half-reaction is a part of redox reaction that shows only for the oxidized species with electrons and its oxidation state increases with the loss of electrons. Reduction half-reaction: A reduction half-reaction is a part of redox reaction (counterpart of oxidation half-reaction) that shows only for the reduced species with electrons and its oxidation state decreases with the gain of electrons. Anode: The electrode where the oxidation occurs is called as an anode. It is a negatively charged electrode. Cathode: The electrode where reduction occurs is called as a cathode. It is a positively charged electrode. E cell -the potential difference between anode and cathode in cell is determined as cell potential. E o cell -the cell potential measured at specified temperature conditions which is used to compare the potentials of different cells since, the E cell is affected by concentration changes as reaction proceeds and due to energy loss from heating of the cell and external circuit.

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Chapter 21, Problem 21.83P

Interpretation Introduction

Interpretation:

The response of given voltaic cell when negative terminal of dry cell is attached to cathode and the positive terminal is attached to anode has to be identified.

Concept Introduction:

Oxidation: The gain of oxygen or the loss of hydrogen or the loss of an electron in a species during a redox reaction is called as oxidation.

Reduction: The loss of oxygen or the gain of hydrogen or the gain of an electron in a species during a redox reaction is called as reduction.

Oxidizing agent: The substance that is oxidized is called as a reducing agent.

Reducing agent: The substance that is reduced is called as an oxidizing agent.

Oxidation half-reaction: An oxidation half-reaction is a part of redox reaction that shows only for the oxidized species with electrons and its oxidation state increases with the loss of electrons.

Reduction half-reaction: A reduction half-reaction is a part of redox reaction (counterpart of oxidation half-reaction) that shows only for the reduced species with electrons and its oxidation state decreases with the gain of electrons.

Anode: The electrode where the oxidation occurs is called as an anode. It is a negatively charged electrode.

Cathode: The electrode where reduction occurs is called as a cathode. It is a positively charged electrode.

Ecell-the potential difference between anode and cathode in cell is determined as cell potential.

Eocell-the cell potential measured at specified temperature conditions which is used to compare the potentials of different cells since, the Ecell is affected by concentration changes as reaction proceeds and due to energy loss from heating of the cell and external circuit.

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