TS EAMCET · Chemistry · Electrochemistry

Two statements are given below. Statement I : Molten NaCl is electrolysed using Pt electrodes. \(\mathrm{Cl}_2\) is liberated at anode. Statement II : Aqueous \(\mathrm{CuSO}_4\) is electrolysed using Pt electrodes. \(\mathrm{O}_2\) is liberated at cathode. The correct answer is

A Both statement I and II are correct
B Both statement I and II are not correct
C Statement I is correct but statement II is not correct
D Statement \(I\) is not correct but statement \(I I\) is correct

Verified Solution

Answer & Solution

Correct Answer

(C) Statement I is correct but statement II is not correct

Step-by-step Solution

Detailed explanation

During electrolysis of molter NaCl , sodium metal is deposited at the cathode, whereas, chlorine is liberated at the anode. The reaction are. At cathode: \(\mathrm{Na}^{+}+\mathrm{e}^{-} \rightarrow \mathrm{Na}\) At anode :…

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

Same subject

Explore more questions on app

From TS EAMCET

Explore more questions on app