Analytical ChemistryHard
Question
An inorganic salt when heated with concentrated H2SO4 evolves a colourless pungent smelling gas but with concentrated H2SO4 and MnO2 evolves a coloured pungent smelling gas which bleaches moist litmus paper. The coloured gas is :
Options
A.NO2
B.Cl2
C.Br2
D.I2
Solution
Cl- + H2SO4 → HCl ↑ (colourless) + HSO4-
MnO(OH)2 + 2H2SO4 + 2Cl- → Mn2+ + Cl2 ↑ (yellowish green) + 2SO42- + 3H2O
Cl2 + H2O → 2HCl + [O]
Litmus + [O] → colourless oxidised form
Cl2 is a yellowish green gas which bleaches litmus paper by oxidation.
MnO(OH)2 + 2H2SO4 + 2Cl- → Mn2+ + Cl2 ↑ (yellowish green) + 2SO42- + 3H2O
Cl2 + H2O → 2HCl + [O]
Litmus + [O] → colourless oxidised form
Cl2 is a yellowish green gas which bleaches litmus paper by oxidation.
Create a free account to view solution
View Solution FreeMore Analytical Chemistry Questions
The compound insoluble in acetic acid is :...When CS2 layer containing both Br2 and I2 (2 : 1) is shaken with excess of chlorine (Cl2) water, the violet colour due t...When a salt is heated with dilute H2SO4 and KMnO4 solution, the pink colour of KMnO4 is discharged, the salt is :...Consider the following observation :Mn+ + HCl (dilute) → white precipitate water soluble yellow precipitate.The me...A gas ′X′ is passed through water to form a saturated solution. The aqueous solution on treatment with silve...