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BITSAT 2016
Exam
BITSAT
Year
2016
Subject
Chemistry
Chapter
Electrochemistry

BITSAT 2016 · Chemistry · Electrochemistry

The EMF of the cell Tl / Tl^ + (0.001 M) \| Cu^ 2+ (0.01 M) / Cu is...

The EMF of the cell Tl/Tl+(0.001M)∥Cu2+(0.01M)/Cu\mathrm{Tl} / \mathrm{Tl}^{+}(0.001 \mathrm{M}) \| \mathrm{Cu}^{2+}(0.01 \mathrm{M}) / \mathrm{Cu} is 0.83.0.83. The cell EMF can be increased by

Options

  1. AIncreasing the concentration of Tl+\mathrm{Tl}^{+} ions.
  2. BIncreasing the concentration of Cu2+\mathrm{Cu}^{2+} ions.
  3. CIncreasing the concentration of Tl+\mathrm{Tl}^{+} and Cu2+\mathrm{Cu}^{2+} ions.
  4. DNone of these

Correct answer

B. Increasing the concentration of Cu2+\mathrm{Cu}^{2+} ions.

Step-by-step solution

The oxidation potential ∝1 Concentration of ions \propto \frac{1}{\text{ Concentration of ions }} and reduction potential ∝\propto concentration of ions. The cell voltage can be increased by decreasing the concentration of ions around anode or by increasing the concentration of ions around cathode
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