N2H4(g)+O2(g)=N2(g)+2H2O(g),△H=-534.0kJ/mol,下列表示肼跟N2O4反應(yīng)的熱化學(xué)反應(yīng)方程式.正確的是 查看更多

 

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肼(N2H4)是火箭發(fā)動機(jī)的燃料,反應(yīng)時N2O4為氧化劑,生成氮?dú)夂退魵。已知?/p>

N2(g)+2O2(g)=N2O4(g);△H=+8.7kJ/mol 

N2H4(g)+O2(g)=N2(g)+2H2O(g);△H=-534.0kJ/mol

下列表示肼跟N2O4反應(yīng)的熱化學(xué)方程式,正確的是                       

    A.2N2H4(g)+N2O4(g)=3N2(g)+4H2O(g);△H=-542.7kJ/mol

    B.2N2H4(g)+N2O4(g)=3N2(g)+4H2O(g);△H=-1059.3kJ/mol

    C.2N2H4(g)+N2O4(g)=3N2(g)+4H2O(g);△H=-1076.7kJ/mol

    D.N2H4(g)+N2O4(g)=N2(g)+2H2O(g);△H=-1076.7kJ/mol

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肼(N2H4)是火箭發(fā)動機(jī)的燃料,反應(yīng)時N2O4為氧化劑,生成氮?dú)夂退魵猓阎?/P>

N2(g)+2O2(g)=N2O4(g);△H=+8.7kJ/mol

N2H4(g)+O2(g)=N2(g)+2H2O(g);△H=-534.0kJ/mol

下列表示肼跟N2O4反應(yīng)的熱化學(xué)方程式,正確的是

[  ]

A.

2N2H4(g)+N2O4(g)=3N2(g)+4H2O(g);△H=-542.7kJ/mol

B.

2N2H4(g)+N2O4(g)=3N2(g)+4H2O(g);△H=-1059.3kJ/mol

C.

2N2H4(g)+N2O4(g)=3N2(g)+4H2O(g);△H=-1076.7kJ/mol

D.

N2H4(g)+N2O4(g)=N2(g)+2H2O(g);△H=-1076.7kJ/mol

查看答案和解析>>

肼(N2H4)是火箭發(fā)動機(jī)的燃料,反應(yīng)時N2O4為氧化劑,生成氮?dú)夂退魵。已知?br />N2(g)+2O2(g)=N2O4(g);△H="+8.7kJ/mol "
N2H4(g)+O2(g)=N2(g)+2H2O(g);△H=-534.0kJ/mol
下列表示肼跟N2O4反應(yīng)的熱化學(xué)方程式,正確的是                                       (  )

A.2N2H4(g)+N2O4(g)=3N2(g)+4H2O(g);△H=-542.7kJ/mol
B.2N2H4(g)+N2O4(g)=3N2(g)+4H2O(g);△H=-1059.3kJ/mol
C.2N2H4(g)+N2O4(g)=3N2(g)+4H2O(g);△H=-1076.7kJ/mol
D.N2H4(g)+N2O4(g)=N2(g)+2H2O(g);△H=-1076.7kJ/mol

查看答案和解析>>

肼(N2H4)是火箭發(fā)動機(jī)的燃料,反應(yīng)時N2O4為氧化劑,生成氮?dú)夂退魵。已知?/p>

N2(g)+2O2(g)=N2O4(g);△H=+8.7kJ/mol 

N2H4(g)+O2(g)=N2(g)+2H2O(g);△H=-534.0kJ/mol

下列表示肼跟N2O4反應(yīng)的熱化學(xué)方程式,正確的是                                        (   )

       A.2N2H4(g)+N2O4(g)=3N2(g)+4H2O(g);△H=-542.7kJ/mol

       B.2N2H4(g)+N2O4(g)=3N2(g)+4H2O(g);△H=-1059.3kJ/mol

       C.2N2H4(g)+N2O4(g)=3N2(g)+4H2O(g);△H=-1076.7kJ/mol

       D.N2H4(g)+N2O4(g)=N2(g)+2H2O(g);△H=-1076.7kJ/mol

 

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肼(N2H4)是火箭發(fā)動機(jī)的燃料,反應(yīng)時N2O4為氧化劑,生成氮?dú)夂退魵狻R阎?/p>

N2(g)+2O2(g)=N2O4(g);△H=+8.7kJ/mol 

N2H4(g)+O2(g)=N2(g)+2H2O(g);△H=-534.0kJ/mol

下列表示肼跟N2O4反應(yīng)的熱化學(xué)方程式,正確的是               (   )

       A.2N2H4(g)+N2O4(g)=3N2(g)+4H2O(g);△H=-542.7kJ/mol

       B.2N2H4(g)+N2O4(g)=3N2(g)+4H2O(g);△H=-1059.3kJ/mol

       C.2N2H4(g)+N2O4(g)=3N2(g)+4H2O(g);△H=-1076.7kJ/mol

       D.N2H4(g)+N2O4(g)=N2(g)+2H2O(g);△H=-1076.7kJ/mol

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1―5  CADAA    6―10 ACBDA    11―15 CDBCC    16―17 AC

18.AB   19.AC    20.BD

21.(1)①B     ②BDF    ③偏小

   (2)①酒精燈   

    ②在干燥器中冷卻是為了防止空氣中的H2O影響結(jié)果

    ③

    ④偏高

20081212

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        高溫

           (3)①3MnO2+6KOH+KclO3===3K2MnO4+KCl+3H2O↑

        ②4H++3MnO2-4==MnO2+2MnO4+2H2O

           (4)①10.7%  ②0.25    ③3:2

           (5)

        w.w.w.k.s.5.u.c.o.m

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