Question

下列气体能用浓H₂SO₄干燥的是

A.SO₂                                                                                              B.NH₃

C.HBr                                               D.H₂S

Answer 1

A

解析:

浓H₂SO₄具有强氧化性，HBr、H₂S具有强还原性；NH₃是碱性物质，NH₃与H₂SO₄作用生成(NH₄)₂SO₄。