Consider the following reaction - 2 Ag - C 6 H 12 O 6- H 2 O - 2 Ag s - C 6 H 12 O 7-2 H -When ammonia is added to the solution- pH israised to 11 - Which half-cell reaction is affected by pH and by how much -E -0-red -0-05 - V Ag NH - 3- 2- e - - rightarrow Ag s - NH - 3 -E - O - red -0-337 - V A- Eoxid Will increase by a factor 0-65 from Eoxid 0B- E red will increase by a factor of 0-65 from E red 0C- Ered Will decrease by a factor of 0-65 fromD- Eoxid Will decrease by a factor of 0-65 from Eoxid 0

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Introduction to Oxidation and Reduction

Consider the ...

Question

Consider the following reaction : $2 A g^{+} + C_{6} H_{12} O_{6} + H_{2} O \to 2 A g (s) + C_{6} H_{12} O_{7} + 2 H^{+}$ When ammonia is added to the solution, pH is raised to 11. Which half-cell reaction is affected by pH and by how much ?
$A g^{+} + e^{-} \to A g; E_{r e d}^{o} = 0.8 V C_{6} H_{12} O_{6} + H_{2} O \to C_{6} H_{12} O_{7} + 2 H^{+} + 2 e^{-}; E_{r e d}^{o} = - 0.05 V A g (N H_{3})_{2}^{+} + e^{-} \to A g (s) + N H_{3}; E_{r e d}^{o} = 0.337 V$

E_{o x i d}

Will increase by a factor 0.65 from

E_{o x i d}^{o}

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E_{o x i d}

Will decrease by a factor of 0.65 from

E_{o x i d}^{o}

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E_{r e d}

will increase by a factor of 0.65 from

E_{r e d}^{o}

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E_{r e d}

Will decrease by a factor of 0.65 from

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Solution

The correct option is A $E_{o x i d}$ Will increase by a factor 0.65 from $E_{o x i d}^{o}$
As ammonia is — added the concentration of $H^{+}$ decreases, thus oxidation potential increases by 0.65.

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Similar questions

Tollen’s reagent is used for the detection of aldehyde, when a solution of $A g N O_{3}$ is added to glucose with $N H_{4} O H$ then gluconic acid is formed.

$A g^{+} + e^{-} \to A g;$ $E_{r e d}^{\circ} = 0.8 V$

$C_{6} H_{12} O_{6} + H_{2} O \to C_{6} H_{12} O_{7}$ (Gluconic acid) $+ 2 H^{+} + 2 e; E_{o x d}^{\circ} = - 0.05 V$

$[A g (N H_{3})_{2}]^{+} + e^{-} \to A g (S) + 2 N H_{3}; E_{r e d}^{\circ} = - 0.337 V$

[Use $2.303 \times \frac{R T}{F} = 0.0592$ and $\frac{F}{R T} = 38.92$ at 298 K]

(ii) When ammonia is added to the solution, pH is raised to 11. Which half-cell reaction is affected by pH and by how much?

Q. Tollen's reagent is used for the detection of aldehydes. When a solution of

A g N O_{3}

is added to glucose with

N H_{4} O H

, then gluconic acid is formed.

A g^{+} + e^{-} \to A g; E_{r e d}^{o} = 0.80 V

C_{6} H_{12} O_{6} + H_{2} O \to C_{6} H_{12} O_{7} + 2 H^{+} + 2 e^{-}; E_{o x i}^{o} = - 0.05 V

A g (N H_{3})_{2}^{+} + e^{-} \to A g (s) + 2 N H_{3}; E_{r e d}^{o} = 0.337 V

(Take : 2.303 \times \frac{R T}{F} = 0.06 at 298 K)

When ammonia is added to the solution,

p H

is raised to 11. Which half-cell reaction is affected by

p H

and by how much?

Q. Tollen's reagent is used for the detection of aldehydes. When a solution of

A g N O_{3}

is added to glucose with

N H_{4} O H

, then gluconic acid is formed.

A g^{+} + e^{-} \to A g; E_{r e d}^{o} = 0.80 V

C_{6} H_{12} O_{6} + H_{2} O \to C_{6} H_{12} O_{7} + 2 H^{+} + 2 e^{-}; E_{o x i}^{o} = - 0.05 V

A g (N H_{3})_{2}^{+} + e^{-} \to A g (s) + 2 N H_{3}; E_{r e d}^{o} = 0.337 V

(Take : 2.303 \times \frac{R T}{F} = 0.06 at 298 K)

When ammonia is added to the solution,

p H

is raised to 11. Which half-cell reaction is affected by

p H

and by how much?

Tollen’s reagent is used for the detection of aldehyde, when a solution of $A g N O_{3}$ is added to glucose with $N H_{4} O H$ then gluconic acid is formed.

$A g^{+} + e^{-} \to A g;$ $E_{r e d}^{\circ} = 0.8 V$

$C_{6} H_{12} O_{6} + H_{2} O \to C_{6} H_{12} O_{7}$ (Gluconic acid) $+ 2 H^{+} + 2 e; E_{o x d}^{\circ} = - 0.05 V$

$A g (N H_{3})_{2}^{+} + e^{-} \to A g (S) + 2 N H_{3}; E^{\circ} = - 0.337 V$

[Use $2.303 \times \frac{R T}{F} = 0.0592$ and $\frac{F}{R T} = 38.92$ at 298 K]

(i) $2 A g^{+} + C_{6} H_{12} O_{6} + H_{2} O \to 2 A g (s) + C_{6} H_{12} O_{7} + 2 H^{+}$ . Find ln K of this reaction.

Q. When ammonia is added to the solution,

p H

is raised to

11

. Which half-cell reaction is affected by

p H

and by how much?

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The correct option is A Eoxid Will increase by a factor 0.65 from EooxidAs ammonia is — added the concentration of H+ decreases, thus oxidation potential increases by 0.65.

The correct option is A $E_{o x i d}$ Will increase by a factor 0.65 from $E_{o x i d}^{o}$
As ammonia is — added the concentration of $H^{+}$ decreases, thus oxidation potential increases by 0.65.