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
Which of the following statements is/are incorrect ?...Which of the following hydrogen halides react(s) with AgNO3(aq) to give a precipitate that dissolves in Na2S2O3(aq)?...White precipitate of AgCl turns to greyish or black when :...Select the correct statements with respect to the manganese nitrate solution in water....The compound used for gravimetric estimation of copper (II) is :...