(A) During electrolysis,the ion with the higher standard reduction potential $(E^{\circ})$ is reduced first at the cathode.Comparing the given values:

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(A) During electrolysis,the ion with the higher standard reduction potential $(E^{\circ})$ is reduced first at the cathode.Comparing the given values:$E^{\circ}_{A^{2+}/A} = 0.8 \ V$$E^{\circ}_{B^{3+}/B} = 0.6 \ V$Since $0.8 \ V > 0.6 \ V$,the ion $A^{2+}_{(aq.)}$ has a higher reduction potential.Therefore,$A^{2+}_{(aq.)}$ will be deposited first at the cathode.

Class 12 Chemistry Electrochemistry Electrochemical cells

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$A^{2+}_{(aq.)} + 2e^- \to A_{(s)}$ ; $E^{\circ} = 0.8 \ V$
$B^{3+}_{(aq.)} + 3e^- \to B_{(s)}$ ; $E^{\circ} = 0.6 \ V$
Using the above information,find the ion which will be deposited first at the cathode if a solution containing $A^{2+}_{(aq.)}$ and $B^{3+}_{(aq.)}$ is electrolysed.

A
$A^{2+}_{(aq.)}$
B
$B^{3+}_{(aq.)}$
C
$H^{+}_{(aq.)}$
D
$OH^{-}_{(aq.)}$

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$A^{2+}_{(aq.)} + 2e^- \to A_{(s)}$ ; $E^{\circ} = 0.8 \ V$$B^{3+}_{(aq.)} + 3e^- \to B_{(s)}$ ; $E^{\circ} = 0.6 \ V$Using the above information,find the ion which will be deposited first at the cathode if a solution containing $A^{2+}_{(aq.)}$ and $B^{3+}_{(aq.)}$ is electrolysed.

Similar Questions

If $\lambda_{m}^{o}(SO_{4}^{2-}) = 160 \ S \ cm^{2} \ mol^{-1}$ and $\Lambda_{m}^{o}(Al_{2}(SO_{4})_{3}) = 758 \ S \ cm^{2} \ mol^{-1}$,then calculate $\lambda_{m}^{o}(Al^{3+})$.

Which among the following equations represents the reduction taking place in a lead accumulator at the positive electrode,while it is being used as a source of electrical energy?

In a galvanic cell,the salt bridge

Which of the following is incorrect in a galvanic cell?

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$A^{2+}_{(aq.)} + 2e^- \to A_{(s)}$ ; $E^{\circ} = 0.8 \ V$
$B^{3+}_{(aq.)} + 3e^- \to B_{(s)}$ ; $E^{\circ} = 0.6 \ V$
Using the above information,find the ion which will be deposited first at the cathode if a solution containing $A^{2+}_{(aq.)}$ and $B^{3+}_{(aq.)}$ is electrolysed.