H2O-NaCl-Na2SO4的三元系中,Na2SO4和H2O能形成水合物Na2SO4middot;10H2O(D),在DBC区中存在的是:() A. 水合物D
NaClA practical and eco-friendly aerobic oxidation of homopropargylic alcohols using Fe(NO 3 ) 3 路9H 2 O/TEMPO/NaCl as catalysts at room temperature under atmospheric pressure was developed affording corresponding homopropargylic ketones with moderate to good yields. Aryl, heteroaryl as well as ...
下列离子方程式正确的是( ) A.Na2S2O3溶液中加入稀硫酸:2S2O +2H+===SO +3S↓+H2O B.向NH4HSO3溶液中滴加少量KOH溶液:NH +OH-===NH3·H2O C.盐碱地(含较多NaCl