Analytical ChemistryHard
Question
Consider the following statements ;
S1 : white fumes of boric acid are evolved if borax is heated with concentrated H2SO4.
S2 : Pb2+ and Ag+ ions (from concentrated solutions) both give white precipitate with Cl- ions.
S3 : dilute H2SO4 decomposes both carbonates and bicarbonates liberating CO2 gas.
S4 : Silver nitrate solution gives white precipitate with soluble sulphites.
and arrange in the order of true / false.
S1 : white fumes of boric acid are evolved if borax is heated with concentrated H2SO4.
S2 : Pb2+ and Ag+ ions (from concentrated solutions) both give white precipitate with Cl- ions.
S3 : dilute H2SO4 decomposes both carbonates and bicarbonates liberating CO2 gas.
S4 : Silver nitrate solution gives white precipitate with soluble sulphites.
and arrange in the order of true / false.
Options
A.T T T T
B.T F T F
C.F T F T
D.F F F F
Solution
S1 : Na2B4O7 + H2SO4 + 5H2O → 4H3BO3 ↑(white fumes) + 2Na+ + SO42-
S2 : Ag+ + Cl- → AgCl ↓ (white) Pb2+ + 2Cl- → PbCl2↓ (white)
S3 : CO32- + 2H+ → CO2↑ + H2O
S4 : Ag+ + SO32- → Ag2SO3 ↓ (white)
S2 : Ag+ + Cl- → AgCl ↓ (white) Pb2+ + 2Cl- → PbCl2↓ (white)
S3 : CO32- + 2H+ → CO2↑ + H2O
S4 : Ag+ + SO32- → Ag2SO3 ↓ (white)
Create a free account to view solution
View Solution FreeMore Analytical Chemistry Questions
The pair in which both species have iron is :...When H2S is passed through Hg2S we get...The ion that cannot be precipitated by both HCl and H2S is :...A coloured solution of a salt gives following reactions.(i) It gives white precipitate with sodium hydroxide which becom...Which of the following is not precipitated as sulphide by passing H2S in the presence of concentrated HCl ?...