H<sub>2</sub>O作为溶剂,对下面各组物质有区分效应的是()。
A、HCl、HAc、NH3、CH3OH
B、HI、HClO、NH4+、Ac-
C、HNO3、NaOH、Ba(OH)2、H3PO4
D、NH3、N2H4、CH3NH2、NH2OH
A、HCl、HAc、NH3、CH3OH
B、HI、HClO、NH4+、Ac-
C、HNO3、NaOH、Ba(OH)2、H3PO4
D、NH3、N2H4、CH3NH2、NH2OH
A、CH<sub>4sub>•H<sub>2sub>O晶体中水是溶剂 B、CH<sub>4sub>•H<sub>2sub>O的组成元素有三种 C、CH<sub>4sub>•H<sub>2sub>O中CH<sub>4sub>和H<sub>2sub>O的质量比为1:1 D、可燃冰能燃烧,说明水具有可燃性
A、H<sub>2sub>O B、CO<sub>2sub>、H<sub>2sub>O C、细胞物质、CO<sub>2sub>、H<sub>2sub>O D、污泥、CO<sub>2sub>、H<sub>2sub>O
A、C+O<sub>2sub>=CO<sub>2sub> B、C+O<sub>2sub>=CO C、CO+H<sub>2sub>O=CO<sub>2sub>+H<sub>2sub> D、C+H<sub>2sub>O=CO+H<sub>2sub>
A、H<sub>2sub>B<sub>3sub>O<sub>6sub> B、H<sub>2sub>B<sub>4sub>O<sub>7sub> C、H<sub>2sub>B<sub>2sub>O<sub>3sub> D、H<sub>2sub>B<sub>3sub>O<sub>5sub>
A、(a)H<sub>2sub>O(l,373K,100kPa)与(b)H<sub>2sub>O(g,373K,100kPa) B、(a)H<sub>2sub>O(l,373K,200kPa)与(b)H<sub>2sub>O(g,373K,200kPa) C、(a)H<sub>2sub>O(l,374K,100kPa)与(b)H<sub>2sub>O(g,374K,100kPa) D、(a)H<sub>2sub>O(l,373K,100kPa)与(b)H<sub>2sub>O(g,373K,200kPa)
A、CS<sub>2sub>+H<sub>2sub>O→COS+H<sub>2sub>S B、CS<sub>2sub>+2H<sub>2sub>O→CO<sub>2sub>+2H<sub>2sub>S C、CS<sub>2sub>+H<sub>2sub>O→CO+H<sub>2sub>S D、2CS<sub>2sub>+H<sub>2sub>O→2COS+<sub>2sub>
A、C<sub>nsub>H<sub>2n+2sub>O<sub>2sub> B、C<sub>nsub>H<sub>2nsub>O<sub>2sub> C、C<sub>nsub>H<sub>n+2sub>O<sub>2sub> D、C<sub>nsub>H<sub>2n+1sub>O<sub>2sub>