Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 1>Q 112

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What is the electrode potential (in $V$ ) of the following electrode at $25 ° C$ ?

${Ni}^{2 +} (0.1 M) ∣ Ni (s)$

(Standard reaction potential of ${Ni}^{2 +} ∣ Ni$ is $- 0.25 V, \frac{2.303 RT}{F}$ $= 0.06$ )

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Important Questions on Electrochemistry

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 1>Q 113

Find the

emf

of the given,

E^{0} {Pb}^{2 +} / Pb = - 0.12 V; E^{0} {Zn}^{2 +} / Zn = - 0.76 V

cell

Zn / {Zn}^{2 +} (0.1 M) ‖ {Pb}^{2 +} (1 M) ∣ Pb

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 1>Q 114

For the redox reaction:

Z n (s) + C u^{2 +} (0.1 M) \to Z n^{2 +} (1 M) + C u (s)

Taking place in a cell,

E_{c e l l}^{o}

is 1.10 V.

E_{c e l l}

for the cell will be [2.303

(R T / F) = 0.0591

]

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 1>Q 115

For a reaction

A (s) + 2 B^{+} (al) \Leftrightarrow (ag) A^{2 +} + 2 B (s) K_{c}

has been found to be

10^{12}

. The

E °

cell is:

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 1>Q 116

By how much will the potential of half cell

{Cu}^{2 +} / Cu

change if the solution is diluted to 100 times at

298 K

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 1>Q 117

Which respresent a concertration cell?

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 1>Q 118

Zn |{Zn}^{2 +} (C_{1}) ‖ {Zn}^{2 +} (C_{2})| Zn

for this cell

ΔG

is negative if

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 1>Q 119

Which of the following is not a strong electrolyte?

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 1>Q 120

The degree of dissociation in a weak electrolyte increases :