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प्रश्न
Select the ion in the following case, that would get selectively discharged from the aqueous mixture of the ions listed below:
\[\ce{SO^2-_4, NO^-_3 {and} OH-}\]
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उत्तर
\[\ce{OH^-}\] ion will get discharged in preference to \[\ce{SO^2-_4 {or} NO^-_3}\] ions.
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संबंधित प्रश्न
Select the ion in the following case, that would get selectively discharged from the aqueous mixture of the ions listed below:
Pb2+, Ag+ and Cu2+
Name two substances in the following case:
Contain only ions.
Explain the following:
On electrolysis of dilute copper (II) sulphate solution, copper is deposited at the cathode but no hydrogen gas evolves there. Explain why?
Explain the following:
When a dilute aqueous solution of sodium chloride is electrolysed between platinum electrodes, hydrogen gas is evolved at the cathode but metallic sodium is not deposited. Why?
Arrange the following according to the instruction given in bracket:
Cu2+, Na+, Zn2+, Ag+ (The order of Preferential discharge at the cathode)
