Which of the following observations/statements is/are correct?

Question

Which of the following observations/statements is/are correct? (A) Anhydrous CuSO4 becomes blue in aqueous medium due to the complex formation (B) Ni(CN)2 dissolves in KCN giving an orange-red solution (C) Fe(OH)3 can be precipitated by adding NH4OH to K3[FeCCN),6] (D) None of the above

Tardigrade Admin · Accepted Answer

Anhydrous CuSO4 become blue in aqueous medium due to the complex formation. CuSO4 + 4NH3 → [Cu (NH3)4]+2

Q. Which of the following observations/statements is/are correct?

Anhydrous $C u S O_{4}$ becomes blue in aqueous medium due to the complex formation

$N i (CN)_{2}$ dissolves in $K CN$ giving an orange-red solution

$F e (O H)_{3}$ can be precipitated by adding $N H_{4} O H$ to $K_{3} [F e CCN),_{6}]$

None of the above

Anhydrous $C u S O_{4}$ become blue in aqueous medium due to the complex formation.
$C u S O_{4} + 4 N H_{3} \to [C u (N H_{3})_{4}]^{+ 2}$

Q. Which of the following observations/statements is/are correct?

Anhydrous CuSO4​ becomes blue in aqueous medium due to the complex formation

Ni(CN)2​ dissolves in KCN giving an orange-red solution

Fe(OH)3​ can be precipitated by adding NH4​OH to K3​[FeCCN),6​]

None of the above

Anhydrous CuSO4​ become blue in aqueous medium due to the complex formation. CuSO4​+4NH3​→[Cu(NH3​)4​]+2

Anhydrous $C u S O_{4}$ becomes blue in aqueous medium due to the complex formation

$N i (CN)_{2}$ dissolves in $K CN$ giving an orange-red solution

$F e (O H)_{3}$ can be precipitated by adding $N H_{4} O H$ to $K_{3} [F e CCN),_{6}]$

Anhydrous $C u S O_{4}$ become blue in aqueous medium due to the complex formation.
$C u S O_{4} + 4 N H_{3} \to [C u (N H_{3})_{4}]^{+ 2}$