In: Chemistry
Which of the following elements can be prepared by electrolysis of their aqueous salts: fluorine copper nitrate calcium silver iodine potassium
Please explain as simply as possible as well
fluorine –answer
Fluorine:
it can be prepared by the electrolysis of liquid HF
More positive (less negative) the standard reduction potential, greater the oxidizing power.
, F- has greater oxidizing power than water.
Hence
water will be oxidized to O2at anode
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silver and copper
metal by electrolysis of an aqueous solution of its salts .
as silver and copper have higher reduction potential than water
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calcium-------- metal that cannot be obtained by electrolysis of an aqueous solution of its salts is Ca.
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Potassium--------- will react with water. And forms hydroxide solutions,
Electrolysis of hydroxide solutions, any metal released at the cathode will immediately react with the water
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