H<sub>2</sub>O(l,273 K,101kPa)≒H<sub>2</sub>O(s,273K,101kPa),Q<sub>p</sub>=DH,DA=W<sub>r</sub>,ΔG=()
A、H2(g)和Cl2(g)在绝热钢瓶中反应生成HCl(g), AGD=D,W(),Q(),ΔU(),ΔH()。
A、H2(g)和Cl2(g)在绝热钢瓶中反应生成HCl(g), AGD=D,W(),Q(),ΔU(),ΔH()。
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、H<sub>2sub>O(l) H<sub>2sub>O(g) H<sub>2sub>O(s) B、Cl<sub>2sub>(l) Br<sub>2sub> (l) I<sub>2sub>(s) C、Na(s) NaCl(s) CaCl<sub>2sub>(s) D、O<sub>3sub>(g) O<sub>2sub>(g) O(g)
A、H<sub>2sub>O的标准生成热Δ<sub>fsub>H<sub>msub>θ B、H<sub>2sub>(g)的标准燃烧热ΔcHmθ(H<sub>2sub>,g) C、H<sub>2sub>O(l)的标准生成热Δ<sub>fsub>H<sub>msub>θ(H<sub>2sub>O,l) D、氢氧电池可逆热效应 E、以上均不对
A、H<sub>2sub>O(l,268K,100kPa)→H<sub>2sub>O(s,268K,100kPa) B、在298 K,100kPa时,H<sub>2sub>(g)+Cl<sub>2sub>(g)=2HCl(g) C、在298 K,100kPa时,一定量的NaCl(s)溶于水中 D、H<sub>2sub>O(l,373K,100kPa)→H<sub>2sub>O(g,373K,100kPa)
A、330kV及以上:总烃<10μL/L,H<sub>2sub><50μL/L,C<sub>2sub>H<sub>2sub>=0.1 B、330kV及以上:总烃<10μL/L,H<sub>2sub><100μL/L,C<sub>2sub>H<sub>2sub>=0.1 C、220kV及以下:总烃<10μL/L,H<sub>2sub><50μL/L,C<sub>2sub>H<sub>2sub>=0.1 D、220kV及以下:总烃<10μL/L,H<sub>2sub><100μL/L,C<sub>2sub>H<sub>2sub>=0.1
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、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>