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Standard XII

Chemistry

Arrhenius Acid

When excess o...

Question

When excess of sodium thiosulphate is added to dil. $A g N O_{3}$ solution a soluble compound X is formed. However, when dil. $N a_{2} S_{2} O_{3}$ solution is addeed to conc. $A g N O_{3}$ solution a white ppt. turning yellow and finally black ppt. of Y is obtained. Which is correct pair. :

X is

A g_{2} S

and Y is

N a_{3} [A g (S_{2} O_{3})_{2}]

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X is

N a_{3} [A g (S_{2} O_{3})_{2}]

and Y is

A g_{2} S

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X is

A g_{2} S_{2} O_{3}

and Y is

A g_{2} S

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X is

A g_{2} S_{2} O_{3}

and Y is

N a_{3} [A g (S_{2} O_{3})_{2}]

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Solution

The correct option is A X is $N a_{3} [A g (S_{2} O_{3})_{2}]$ and Y is $A g_{2} S$
$2 A g^{+} S_{2} O_{3}^{2 -} \to 2 A g S_{2} O_{3}$
If Sodium Thiosulphate in excess then $N a_{3} [A g (S_{2} O_{3})_{2}]$ will form.
$A g N O_{3} (c o n c .) + N a_{2} S_{2} O_{3} \to A g_{2} S$

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Similar questions

Q. When excess of

N a_{2} S_{2} O_{3}

is added to dil.

A g N O_{3}

, a soluble compound ‘X’ is formed. However, when dil.

N a_{2} S_{2} O_{3}

is added to conc.

A g N O_{3}

solution, a white precipitate turns yellow and finally black. Precipitate ‘Y’ is formed here. Which is the correct pair?

Q. Aqueous solution of A can dissolve

A g B r

forming a soluble complex B. A also reacts with aqueous

{A g N O}_{3}

solution giving white ppt. C changing to black ppt D. (A) is the hypo solution

(N a_{2} S_{2} O_{3})

, (B) is

N a_{3} [A g (S_{2} O_{3})_{2}]

, (C) is

A g_{2} S_{2} O_{3}

and (D) is

A g_{2} S

.
If true enter 1, else enter 0.

Q. When excess of

N a_{2} S_{2} O_{3}

is added to dil.

A g N O_{3}

, a soluble compound ‘X’ is formed. However, when dil.

N a_{2} S_{2} O_{3}

is added to conc.

A g N O_{3}

solution, a white precipitate turns yellow and finally black. Precipitate ‘Y’ is formed here. Which is the correct pair?

Q. In the following reaction sequence in aqueous solution, the species X, Y and Z, respectively, are

S_{2} O_{3}^{2 -} A g^{+} - - \to X clear solution A g^{+} - - \to Y white precipitate with time - ---- \to Z black precipitate

A, B, C, D, E and F in the following are A:

N a_{2} S_{2} O_{3}

; B:

A g_{2} S_{2} O_{3}

; C:

N a_{3} [A g (S_{2} O_{3})_{2}]

; D :

A g_{2} S

; E :

H_{2} S O_{4}

; F:

B a S O_{4}

If the statement is true enter 1, else enter 0.

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When excess of sodium thiosulphate is added to dil. AgNO3 solution a soluble compound X is formed. However, when dil. Na2S2O3 solution is addeed to conc. AgNO3 solution a white ppt. turning yellow and finally black ppt. of Y is obtained. Which is correct pair. :

The correct option is A X is Na3[Ag(S2O3)2] and Y is Ag2S2Ag+S2O2−3→2AgS2O3If Sodium Thiosulphate in excess then Na3[Ag(S2O3)2] will form.AgNO3(conc.)+Na2S2O3→Ag2S

When excess of sodium thiosulphate is added to dil. $A g N O_{3}$ solution a soluble compound X is formed. However, when dil. $N a_{2} S_{2} O_{3}$ solution is addeed to conc. $A g N O_{3}$ solution a white ppt. turning yellow and finally black ppt. of Y is obtained. Which is correct pair. :

The correct option is A X is $N a_{3} [A g (S_{2} O_{3})_{2}]$ and Y is $A g_{2} S$
$2 A g^{+} S_{2} O_{3}^{2 -} \to 2 A g S_{2} O_{3}$
If Sodium Thiosulphate in excess then $N a_{3} [A g (S_{2} O_{3})_{2}]$ will form.
$A g N O_{3} (c o n c .) + N a_{2} S_{2} O_{3} \to A g_{2} S$