AIPMT 2007 | Electrochemistry Question 56 | Chemistry

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AIPMT 2007

MCQ (Single Correct Answer)

-1

The efficiency of a fuel cell is given by

$$\Delta $$G/$$\Delta $$S

$$\Delta $$G/$$\Delta $$H

$$\Delta $$S/$$\Delta $$G

$$\Delta $$H/$$\Delta $$G

AIPMT 2007

MCQ (Single Correct Answer)

-1

The equilibrium constant of the reaction:
Cu_(s) + 2Ag⁺_(aq) $$ \to $$ Cu²⁺_(aq) + 2Ag_(s);
E^o = 0.46 V at 298 K is

2.0 $$ \times $$ 10¹⁰

4.0 $$ \times $$ 10¹⁰

4.0 $$ \times $$ 10¹⁵

2.4 $$ \times $$ 10¹⁰

AIPMT 2006

MCQ (Single Correct Answer)

-1

E^o_Fe²⁺/Fe = $$-$$ 0.441 V and E^o_{Fe³⁺/Fe²⁺} = 0.771 V, the standard EMF of the reaction Fe + 2Fe³⁺ $$ \to $$ 3Fe²⁺ will be

0.111 V

0.330 V

1.653 V

1.212 V

AIPMT 2006

MCQ (Single Correct Answer)

-1

A hypothetical electrochemical cell is shown below.

$$A\left| {{A^ + }\left( {xM} \right)} \right|\left| {{B^ + }\left( {yM} \right)} \right|B$$

The emf measured is + 0.20 V. The cell reaction is

A + B⁺ $$ \to $$ A⁺ + B

A⁺ + B $$ \to $$ A + B⁺

A⁺ + e^$$-$$ $$ \to $$ A; B⁺ + e^$$-$$ $$ \to $$ B

the cell reaction cannot be predicted.

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