A hypothetical electrochemical… - NEET UG 2006 Chemistry PYQ

NEET UG 2006 — Chemistry Physical Chemistry

2006mcqmedium

A hypothetical electrochemical cell is show below $\stackrel{\Theta}{\mathrm{A}}\left|\mathrm{A}^{+}(x \mathrm{M}) \| \mathrm{B}^{+}(y \mathrm{M})\right| \stackrel{\oplus}{\mathrm{B}}$ The emf measured is $+0.20 \mathrm{~V}$ . The cell reaction is:

Official previous-year question

Held on 30 Apr 2006 · Verified 9 Jul 2026.

Options

A
$\mathrm{A}+\mathrm{B}^{+} \rightarrow \mathrm{A}^{+}+\mathrm{B}$
B
$\mathrm{A}^{+}+\mathrm{B} \rightarrow \mathrm{A}+\mathrm{B}^{+}$
C
$\mathrm{A}^{+}+e^{-} \rightarrow \mathrm{A}$ ; $\mathrm{B}^{+}+e^{-} \rightarrow \mathrm{B}$
D
the cell reaction cannot be predicted

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Solution

$\mathrm{A} / \mathrm{A}^{+}(x \mathrm{M}) \| \mathrm{B}^{+}(y \mathrm{M}) / \mathrm{B}$ $\mathrm{E}_{\text {cell }}=+0.20 \mathrm{~V} \therefore \Delta \mathrm{G}=-v e$ Therefore given cell reaction is spontaneous At Anode $\quad \mathrm{A} \rightarrow \mathrm{A}^{+}+e^{-}$

At Cathode	$\mathrm{B}^{+}+e^{-} \rightarrow \mathrm{B}$
Cell reaction	$\mathrm{A}+\mathrm{B}^{+} \rightarrow \mathrm{A}^{+}+\mathrm{B}$

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Options

$\mathrm{A}+\mathrm{B}^{+} \rightarrow \mathrm{A}^{+}+\mathrm{B}$

$\mathrm{A}^{+}+\mathrm{B} \rightarrow \mathrm{A}+\mathrm{B}^{+}$

$\mathrm{A}^{+}+e^{-} \rightarrow \mathrm{A}$ ; $\mathrm{B}^{+}+e^{-} \rightarrow \mathrm{B}$

the cell reaction cannot be predicted

Solution

At Cathode	$\mathrm{B}^{+}+e^{-} \rightarrow \mathrm{B}$
Cell reaction	$\mathrm{A}+\mathrm{B}^{+} \rightarrow \mathrm{A}^{+}+\mathrm{B}$

Options

Did you get this right?

Solution

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Options

Did you get this right?

Solution

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NEET UG Physical Chemistry in other years

More NEET UG Physical Chemistry questions

Other Chemistry topics for NEET UG

Organic Chemistry

Inorganic Chemistry

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