Analytical ChemistryHard
Question
Consider the following statements,
S1 : precipitate of lead thiosulphate is soluble in excess sodium thiosulphate (Na2S2O3).
S2 : moderately concentrated solution of Ba2+ ions gives white precipitate of BaS2O3 with hypo.
S3 : white precipitate of CaSO3 dissolves when excess of SO2 gas is passed through it.
S4 : Hg2+ + S2O32- + H2O → HgS↓ + SO42- + 2H+
and arrange in the order of true / false.
S1 : precipitate of lead thiosulphate is soluble in excess sodium thiosulphate (Na2S2O3).
S2 : moderately concentrated solution of Ba2+ ions gives white precipitate of BaS2O3 with hypo.
S3 : white precipitate of CaSO3 dissolves when excess of SO2 gas is passed through it.
S4 : Hg2+ + S2O32- + H2O → HgS↓ + SO42- + 2H+
and arrange in the order of true / false.
Options
A.T F T T
B.T T F F
C.T T T T
D.T F T F
Solution
S1 : PbS2O3↓ + 2S2O32- → [Pb(S2O3)2]2- (soluble complex).
S2 : Ba2+ + S2O32- → BaS2O3 ↓ (white).
S3 : CaSO3 + H2O + SO2 → Ca(HSO3)2.
S4 : Correct reaction, Hg2+ + S2O32- + H2O → HgS↓ + SO42- + 2H+.
S2 : Ba2+ + S2O32- → BaS2O3 ↓ (white).
S3 : CaSO3 + H2O + SO2 → Ca(HSO3)2.
S4 : Correct reaction, Hg2+ + S2O32- + H2O → HgS↓ + SO42- + 2H+.
Create a free account to view solution
View Solution FreeMore Analytical Chemistry Questions
A mixture of two colourless substances was dissolved in water. When gaseous Cl2 was passed through the solution, contain...The presence of magnesium is confirmed in the qualitative analysis by :...Which of the following is insoluble in dil. HNO3 but dissolves in aquaregia ?...Which of the following pairs comprises the red precipitates ?...Which of the following solutions give white precipitate with Pb(NO3)2 as well as with Ba(NO3)2 ?...