A - Zn rightarrow B-A g -A and B are respectively

The correct option is B Na[Ag(CN)_2], Na_2[Zn(CN)_4]Ag_2 S + 4NaCN + 2O_2 → Na_2SO_4 + 2Na[Ag(CN)_2] 2Na [Ag(CN)_2] + Zn → Na_2 [Zn(CN)_4] + 2Ag ...

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Byju's Answer

Standard XII

Chemistry

Coordination Complexes

A + Zn righta...

Question

$A g_{2} S + N a C N \to (A), (A) + Z n \to (B) + A g$ , (A) and (B) are respectively

N a_{2} [Z n (C N)_{4}], N a_{2} [A g (C N)_{4}]

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N a [A g (C N)_{2}], N a_{2} [Z n (C N)_{4}]

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N a [A g (C N)_{2}], N a [Z n (C N)_{3}]

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N a_{3} [A g (C N)_{3}], N a_{2} [Z n (C N)_{4}]

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Solution

The correct option is B $N a [A g (C N)_{2}], N a_{2} [Z n (C N)_{4}]$
$A g_{2} S + 4 N a C N + 2 O_{2} \to N a_{2} S O_{4} + 2 N a [A g (C N)_{2}] 2 N a [A g (C N)_{2}] + Z n \to N a_{2} [Z n (C N)_{4}] + 2 A g$

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Similar questions

A g_{2} S + N a C N \to A

A + Z n \to B

B

is a metal. Hence,

A

and

B

are respectively:

The cell representation of the given reactions is:

Zn(s) + 2Ag⁺ → Zn²⁺ + 2Ag(s)

The standard reducation potentials of

$Z n^{2 +} | Z n, C u^{2 +} | C u$ and $A g^{+} | A g$

are respectively -0.76, 0.34 and 0.8 V. The following cells were constructed.

a) $Z n | Z n^{2 +} | | C u^{2 +} | C u$

b) $Z n | Z n^{2 +} | | A g^{+} | A g$

c) $C u | C u^{2 +} | | A g^{+} | A g$

What is the correct order $E {^{0}}_{c e l l}$ of these cells?

Q. Zn reacts with dilute

H N O_{3}, C o n c . H N O_{3}

and very dilute

H N O_{3}

. The oxidation number of nitrogen changes from

H N O_{3}

are

a, b, c

in product

X, Y, Z

respectively. What is the value of

(a + b + c)

is
(a)

Z n + H N O_{3} \to Z n (N O_{3})_{2} + " X " + H_{2} O

dilute (

20 %

)
(b)

Z n + H N O_{3} \to Z n (N O_{3})_{2} + " Y " + H_{2} O

Conc (

70 %

)
(a)

Z n + H N O_{3} \to Z n (N O_{3})_{2} + " Z " + H_{2} O

very dilute (

6 %

)

Q. The standard electrode potentials of

\frac{Z n^{2 +}}{Z n}

and

\frac{A g^{+}}{A g}

are

- 0.763 V

and

+ 0.799 V

respectively. The standard potential of the cell is

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Ag2S+NaCN→(A),(A)+Zn→(B)+Ag, (A) and (B) are respectively

The correct option is B Na[Ag(CN)2],Na2[Zn(CN)4]Ag2S+4NaCN+2O2→Na2SO4+2Na[Ag(CN)2]2Na[Ag(CN)2]+Zn→Na2[Zn(CN)4]+2Ag

$A g_{2} S + N a C N \to (A), (A) + Z n \to (B) + A g$ , (A) and (B) are respectively

The correct option is B $N a [A g (C N)_{2}], N a_{2} [Z n (C N)_{4}]$
$A g_{2} S + 4 N a C N + 2 O_{2} \to N a_{2} S O_{4} + 2 N a [A g (C N)_{2}] 2 N a [A g (C N)_{2}] + Z n \to N a_{2} [Z n (C N)_{4}] + 2 A g$