First slide

Comparision of double salt and complex

Question

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

Easy

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[Fe(CN)₆]
D

None of the above

Solution

Anhydrous CuSO₄ become blue in aqueous medium due to the complex formation.
${CuSO}_{4} + 4 {NH}_{3} \to {[Cu {({NH}_{3})}_{4}]}^{+ 2}$

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