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Li in liquid, (F) ORed (6) + (H) O NH, " (E) |Za+NHCI, ) [Ag(NH3)21® (9)+(K) Or Al-Hg/H,

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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 fluconic acid is formced

{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}

(Gluconic acid)

+ 2 H^{+} + 2 e^{-}

;

E_{r e d}^{o} = - 0.05 V

A g {({N H}_{3})}_{2} + e^{-} \to A g (s) + 2 {N H}_{3}

;
(Use

2.202 \times \frac{R T}{F} = 0.0592

and

\frac{F}{R T} = 38.92

298 K

)

2 {A g}^{+} + C_{6} H_{22} O_{6} + H_{2} O \to 2 A g (s) + C_{6} H_{212} O_{7} + 2 H^{+}

Find

ln K

of this reaction?

View Solution

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

Find

log K

of the 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^{+}

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

View Solution

K_{2} {S O}_{4} . {A l}_{2} {({S O}_{4})}_{3} .24 H_{2} O

and

{({N H}_{4})}_{2} {S O}_{4} . {A l}_{2} {({S O}_{4})}_{3} .24 H_{2} O

are:

View Solution

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.

View Solution

Consider the following redox reaction :

S_{4} O_{6}^{2 -} (a q) + A l (s) \to H_{2} S (a q) + A l^{3 +} (a q)

What will be the net balanced equation in an acidic medium (by oxidation number method).

View Solution