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Byju's Answer

Standard XII

Chemistry

Hydrochloric Acid

There are two...

Question

There are two colourless solutions (A) and (B), both give white ppt with $A g N O_{3}$ which dissolves in $a q N H_{3}$ . Also (A) on reaction with $H_{2} O$ gives orange turbidity while (B) gives white turbidity. Identify (A) and (B).

(A)

S b C I_{3};

(B)

B i C I_{3}

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(A)

B i C I_{3};

(B)

S b C I_{3}

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(A)

S e C I_{3};

(B)

B i C I_{3}

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(A)

B i C I_{3};

(B)

S e C I_{3}

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Solution

The correct option is A (A) $S b C I_{3};$ (B) $B i C I_{3}$
$S b C I_{3}$ or $B i C I_{3} + A g N O_{3} ⟶ A g C I ↓ w h i t e p p t$ (due to $C I^{-}$ )
$A g C I + 2 N H_{3} (a q) ⟶ [A g (N H_{3})_{2} s o l u b l e] C I$
$S b C I_{3} + H_{2} O ⟶ S b O C I o r a n g e ↓ + 2 H C I$
$S b O C l + 2 H C I ⟶ S b C I_{3} s o l u b l e + H_{2} O$
$B i C I_{3} + H_{2} O ⟶ B i O C I ↓ w h i t e + 2 H C I$
$B i O C I + 2 H C I ⟶ B i C I_{3} s o l u b l e + H_{2} O$
Turbidity can be dissolved in dil. $H C l$ .

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There are two colourless solutions (A) and (B), both give white ppt with AgNO3 which dissolves in aqNH3. Also (A) on reaction with H2O gives orange turbidity while (B) gives white turbidity. Identify (A) and (B).

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