Analytical ChemistryHard
Question
Cu2+ ions will be reduced to Cu+ ions by the addition of an aqueous solution of :
Options
A.KI
B.KCl
C.KSCN
D.KCN
Solution
2CuSO4 + 4KI → 2CuI ↓ (white) + 2K2SO4 + I2
3SCN- + Cu2+ → CuSCN ↓ (white) + (SCN)2
6CN- + Cu2+ → [Cu(CN)4]3- + (CN)2
3SCN- + Cu2+ → CuSCN ↓ (white) + (SCN)2
6CN- + Cu2+ → [Cu(CN)4]3- + (CN)2
Create a free account to view solution
View Solution FreeMore Analytical Chemistry Questions
When small amount of SnCl2 is added to a solution of Hg2+ ions, a silky while precipitate is obtained. The silky white p...KI solution is the reagent for :...Which of the following is/are not correctly matched ?...Which one of the following cations will give a green coloured ash when a piece of filter paper dipped in a solution cont...Yellow ammonium sulphide solution is a suitable reagent for the separation of :...