Analytical ChemistryHard
Question
Consider the reactions shown below ;
Which of the following statement (s) is/are correct ?
Which of the following statement (s) is/are correct ?
Options
A.[X] is a yellow coloured precipitate.
B.[X] is soluble in ammonia solution.
C.[Y] gives green coloured solution with excess of sodium hydroxide solution.
D.The conversion of Cr2O72- to [Y] is an redox reaction.
Solution
(A) Ag+ 2CrO42- → Ag2CrO4 ↓ (red) [X].
(B) Ag2CrO4 ↓ + 4NH3 → 2[Ag(NH3)2]+ + CrO42-.
(C) Cr3+ + 3OH- → Cr(OH)3 ↓ (green).
Cr(OH)3 + OH- → [Cr(OH)4]- (green coloured soluble complex).
(D) 3SO2+4 + Cr2+7O72- + 2H+ → 2Cr3+[Y] + 3S+6O42- + H2O.
(B) Ag2CrO4 ↓ + 4NH3 → 2[Ag(NH3)2]+ + CrO42-.
(C) Cr3+ + 3OH- → Cr(OH)3 ↓ (green).
Cr(OH)3 + OH- → [Cr(OH)4]- (green coloured soluble complex).
(D) 3SO2+4 + Cr2+7O72- + 2H+ → 2Cr3+[Y] + 3S+6O42- + H2O.
Create a free account to view solution
View Solution FreeMore Analytical Chemistry Questions
Borax bead test given by :...A metal nitrate reacts with KI solution to give yellow precipitate which on addition of excess of more concentrated solu...Which one of the following statements is correct?...The regents NH4Cl and aqueous NH3 will precipitate :...On heating a mixture of common salt and $K_{2}{Cr}_{2}O_{7}$ in equal amount along with concentrated $H_{2}{SO}_{4}$ in ...