Analytical ChemistryHard
Question
Consider the following statements,
S1 : White precipitate of AgCl and yellow precipitate of AgBr both are soluble in concentrated ammonia.
S2 : sodium hydroxide can be used to separate Al(OH)3 and Zn(OH)2.
S3 : alkaline NH4+ salt gives yellow precipitate with K2HgI4.
S4 : Fe2+ gives brown colouration with NH4SCN solution.
and arrange in the order of true / false.
S1 : White precipitate of AgCl and yellow precipitate of AgBr both are soluble in concentrated ammonia.
S2 : sodium hydroxide can be used to separate Al(OH)3 and Zn(OH)2.
S3 : alkaline NH4+ salt gives yellow precipitate with K2HgI4.
S4 : Fe2+ gives brown colouration with NH4SCN solution.
and arrange in the order of true / false.
Options
A.T F T T
B.T F T F
C.F T F T
D. F F F F
Solution
S1 : Both form soluble complex [Ag(NH3)2]+ with concentrated ammonia.
S2 : Both form soluble complexes with excess NaOH ; [Al(OH)4]-, [Zn(OH)4]2-.
S3 : Brown / reddish brown precipitate of iodide of Millon′s base.
S4 : No colouration.
S2 : Both form soluble complexes with excess NaOH ; [Al(OH)4]-, [Zn(OH)4]2-.
S3 : Brown / reddish brown precipitate of iodide of Millon′s base.
S4 : No colouration.
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