Chemistry - Electrochemistry Question with Solution | TestHub
Two electrolytic cells are connected in series to the same DC source so that the same current flows through both cells for time t .
Cell–I: Contains aqueous AgNO3 with platinum electrodes.
Cell–II: Contains dilute H2SO4 with platinum electrodes.
After electrolysis for time t :
• In Cell–I, the mass of the cathode increases by 2.16 g.
• In Cell–II, the total volume of gas collected at STP (sum of gases at both electrodes) is 340.5 mL.
Which of the following statement(s) is/are correct ? (Ag = 108)
Options:(select one or more)
Answer:
Solution:
From Cell-I :
Since 1 mol Ag requires , total electrons passed correct.
In Cell-II:
Volume of correct.
At Pt anode in , water is oxidised to correct.
If Ag anode is used, Ag dissolves instead of water oxidising, so does not evolve ⇒ (D) false.