Analytical ChemistryHard
Question
A colourless solution of a compound gives a precipitate with AgNO3 solution but no precipitate with a solution of Na2CO3. The action of concentrated H2SO4 on the compound liberates a suffocating reddish brown gas. The compound is :
Options
A.Ba(CH3COO)2
B.CaCl2
C.NaI
D.NaBr
Solution
Ag+ + Br- → AgBr ↓ (pale yellow) ; NaBr + Na2CO3 → No reaction.
2NaBr + 2H2SO4 → Br2 (reddish brown) + SO2 + SO42- + 2Na+ + 2H2O.
2NaBr + 2H2SO4 → Br2 (reddish brown) + SO2 + SO42- + 2Na+ + 2H2O.
Create a free account to view solution
View Solution FreeMore Analytical Chemistry Questions
Fe(OH)3 and Cr(OH)3 precipitates can be completely separated by :...Cu2+ ions will be reduced to Cu+ ions by the addition of an aqueous solution of :...Sometimes yellow turbidity appears while passing H2S gas even in slightly acidic medium the absence of II group radicals...Which of the following is insoluble in dil. HNO3 but dissolves in aquaregia ?...Nitrite (NO2-) interferes in the ′ring-test′ of nitrate (NO3-). Some of the following reagents can be used f...