MCQ
What electrolyte is used to electroplate silver onto a spoon?
- APure water.
- BSilver nitrate.
- CCopper sulfate.
- DAcidified water.
✓
Answer
- Silver nitrate.
Explanation:
In silver plating, the object (eg.spood) to be plated is made the cathode of an electrolytic cell. The anode is bar of silver metal and the electrodyte must contain Ag + ions (i.e. AgNO3), so that when the direct current is passed through the cell, positive (Ag+) ions move towards the negative anode (spoon) where they are neutralized by e− and stick to spoon as silver metal.
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