Analytical ChemistryHard
Question
Which of the following anion(s) evolve(s) reddish brown gas with concentrated H2SO4?
Options
A.Br-
B.NO3-
C.SO32-
D.I-
Solution
(A) Br- + H+ → HBr ↑ ; 2HBr + 2H2SO4 → Br2↑ (reddish brown) + SO2 ↑ + SO42- + H2O.
(B) 4NO3- + 2H2SO4 → → 4NO2 ↑ (reddish brown) + O2 ↑ + 2SO42- + 2H2O.
(C) SO32- + 2H+ → SO2 ↑ (colourless) + H2O.
(D) 3I- + 2H2SO4 → I3- ↑ (violet/purple) + SO42- + 2H2O + SO2.
(B) 4NO3- + 2H2SO4 → → 4NO2 ↑ (reddish brown) + O2 ↑ + 2SO42- + 2H2O.
(C) SO32- + 2H+ → SO2 ↑ (colourless) + H2O.
(D) 3I- + 2H2SO4 → I3- ↑ (violet/purple) + SO42- + 2H2O + SO2.
Create a free account to view solution
View Solution FreeMore Analytical Chemistry Questions
A metal salt solution gives a yellow precipitate with silver nitrate. The precipitate dissolves in dilute nitric acid as...The following can be used to regulate the concentration of OH- ions for the scheme of basic radical analysis (III group)...There are four test tubes containing dilute HCl, BaCl2, CdCl2 and KNO3 solutions. Which of the following reagents will h...Which of the following is correct ?..." X " is an oxoanion of the lightest element of group 7 (in the periodic table). The metal is in +6 oxidation state in "...