Analytical ChemistryHard
Question
A blue colouration (in solution or precipitate) is not obtained when :
Options
A.ammonium hydroxide dissolves in copper sulphate.
B.cobalt chloride reacts with NH4SCN in presence of amyl alcohol.
C.ferric chloride reacts with sodium ferrocyanide.
D.aqueous ammonia reacts with white precipitate of silver (I) chloride.
Solution
(A), (B) and (C) all gives blue colouration in solution or blue precipitate.
(D) AgCl ↓ + 2NH3 → [Ag(NH3)2]+ Cl- (colourless solution)
(D) AgCl ↓ + 2NH3 → [Ag(NH3)2]+ Cl- (colourless solution)
Create a free account to view solution
View Solution FreeMore Analytical Chemistry Questions
In the fourth group, white precipitate of Mn(OH)2 on heating with PbO2 and concentrated HNO3 gives red-violet (purple) c...Which of the following reagents turns white precipitate of AgCl yellow ?...Three separate samples of a solution of a single salt gave these results. One formed a white precipitate with excess amm...Ferric alum gives deep red colour with NH4SCN due to the formation of :...Hg2I2↓ (green) productsWhich of the following statement is correct with respect to the products ?...