叔类醇胺与酸性组分反应方程式正确的是( )。
A.2RNH2+H2S→(RNH3)2S(RNH3)2+H2S→2RNH3HS
B.2R3N+H2S→(R3NH)2S(R3NH)2S+H2S→2R3NHHS
C.2R2NH+H2S→(R2NH)2S(R2NH)2S+H2S→2R2NHHS
D.2R3N+H2O+CO2→(R2NH2)2CO3(R2NH2)2CO3+ H2O+CO2→2R2NH2HCO3
正确答案是B