Which one of the following statements is correct ?

Question

Which one of the following statements is correct ? (A) From a mixed precipitate of AgCl and Agl, ammonia solution dissolves only AgCl. (B) Ferric ions give a deep green precipitate on adding potassium ferrocyanide solution. (C) On boiling a solution having K+, Ca2+ and HCO3- ions we get a precipitate of K2Ca(CO3)2. (D) Manganese salts give a violet borax bead test in the reducing flame.

Tardigrade Admin · Accepted Answer

Ammonia can dissolve ppt. of AgCl only due to formation of complex as given below: AgCl +2 NH 3 arrow[ Ag ( NH 3)2] Cl

Q. Which one of the following statements is correct ?

From a mixed precipitate of $A g Cl$ and $A g l$ , ammonia solution dissolves only $A g Cl$ .

Ferric ions give a deep green precipitate on adding potassium ferrocyanide solution.

On boiling a solution having $K^{+}, C a^{2 +}$ and $H C O_{3}^{-}$ ions we get a precipitate of $K_{2} C a (C O_{3})_{2}$ .

Manganese salts give a violet borax bead test in the reducing flame.

Ammonia can dissolve ppt. of $A g Cl$ only due to formation of complex as given below:
$A g Cl + 2 N H_{3} \to [A g (N H_{3})_{2}] Cl$

Q. Which one of the following statements is correct ?

From a mixed precipitate of AgCl and Agl, ammonia solution dissolves only AgCl.

Ferric ions give a deep green precipitate on adding potassium ferrocyanide solution.

On boiling a solution having K+,Ca2+ and HCO3−​ ions we get a precipitate of K2​Ca(CO3​)2​.

Manganese salts give a violet borax bead test in the reducing flame.

Ammonia can dissolve ppt. of AgCl only due to formation of complex as given below: AgCl+2NH3​→[Ag(NH3​)2​]Cl

From a mixed precipitate of $A g Cl$ and $A g l$ , ammonia solution dissolves only $A g Cl$ .

On boiling a solution having $K^{+}, C a^{2 +}$ and $H C O_{3}^{-}$ ions we get a precipitate of $K_{2} C a (C O_{3})_{2}$ .

Ammonia can dissolve ppt. of $A g Cl$ only due to formation of complex as given below:
$A g Cl + 2 N H_{3} \to [A g (N H_{3})_{2}] Cl$