NEET UG CHEMISTRY MCQ: ELECTRO CHEMISTRY

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Analyzing +4 | -1

250 mL of a waste solution obtained from the workshop of a goldsmith contains

0.1\,M\,AgN{O_3}

and

0.1\,M\,AgCl.

The solution was electrolyzed at 2 V by passing a current of 1 A for 15 minutes. The metal/metals electro deposited will be:

\left( {E_{A{g^ + }/Ag}^0 = 0.80\,V,E_{A{u^ + }/Au}^0\, = 1.69\,V} \right)

View answer and explanation

Correct option: A

Only gold

Option A (Only gold) is correct because gold has a higher reduction potential than silver, meaning silver will deposit first, and the applied voltage is sufficient to deposit gold.

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