Question 31
Sulphur and its CompoundsWhich of these gases can be dried with concentrated H2SO4?
- A.HBr
- B.H2S
- C.NH3
- D.SO2
Show the answer and explanation
Answer: D (SO2)
Explanation
A drying agent must not react with the gas. Concentrated H2SO4 oxidizes HBr and H2S and reacts with alkaline NH3, but it does not react with acidic SO2.