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5. The diagram shows an electric current being produced by a galvanic cell. Which one of the
following statements is NOT correct? A. Zinc ions are produced at the zinc Copper Salt Bridge
electrode copper electrode. wires from the zinc to the copper Zinc B. Copper ions are produced
at the C. The electrons flow through the electrode D. The salt bridge maintains a balance Copper
between the ions in both parts of the cell othe alanicel ho heo, which one of hefollowing
statements is correct? A. The following reaction takes place at the Mg electrode: MeMg B. The
electrode potential is measured by the voltmeter. C. At the Zn electrode, Zn ions are formed. D.
Electrons flow from the Zn electrode to the Mg electrode. Zine Magnesium Salt Bridge
Solution
As Cu 2+
/Cu couple has a higher reduction potential compare to Zn 2+
/Zn couple the Cu 2+
gets
reduced to Cu and gets deposited on the Cu electrode.So Cu ions are produced in Cu electrode
I.e the option 'B' is a wrong answer.
As Mg 2+
/Mg couple has a lesser reduction potential compare to Zn 2+
/Zn,it is Mg which gets
oxidised.So option A,C,D all are wrong.So the option B is right.