Analytical ChemistryHard
Question
In which of the following pairs the precipitates are red and black coloured respectively and both precipitates are soluble in excess KI solution ?
Options
A.HgI2, Hg2I2
B.HgI2, BiI3
C.Cu2I2, AgI
D.CdI2, PbI2
Solution
HgI2 ↓ (red) + 2I- → [HgI4]2- (soluble colourless complex) ; BiI3 ↓ (black) + I- → [BiI4]- (soluble orange complex).
Create a free account to view solution
View Solution FreeMore Analytical Chemistry Questions
White precipitate of PbSO4 gets dissolved in :...A brick red colour is imparted to Bunsen flame by a :...Consider the following reactions.$${PbCl}_{2} + K_{2}{CrO}_{4} \rightarrow \text{ }A + 2KCl $$(Hot solution)$${A + NaOH ...Na2 SO4 + BaCl2 → White precipitate Aqueous solution. Gas ′G′ is evolvedThe gas ′G′ will s...The addition of K2CO3 (aq) to the following solution is expected to produce a precipitate in every case but that one whi...