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    6．已知1g火箭燃料肼(N2H4)气体燃烧生成N2和H2O(g)时.放出16.7kJ的热量.则该反 应的热化学方程式正确的是 A．N2H4+O2=N2+2H2O △H = -534.4kJ/mol B．N2H4(g)+ O2(g)= N2(g)+2H2O(g) △H = -16.7kJ/mol C．N2H4(g)+O2(g)=N2(g)+2H2O(l) △H = -534.4kJ/mol D．N2H4(g)+O2(g)=N2(g)+2H2O(g) △H = -534.4kJ/mol 【查看更多】

     

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    已知1g火箭燃料肼（N2H4）气体燃烧生成N2和H2O（g）时，放出16.7kJ的热量，则该反应的热化学方程式正确的是（　　）

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    已知1g火箭燃料肼（N2H4）气体燃烧生成N2和H2O（g）时，放出16.7kJ的热量，则该反应的热化学方程式正确的是(   )

    A．N2H4+O2=N2+2H2O                               △H = —534.4kJ/mol

    B．N2H4(g)+ O2(g)= N2(g)+2H2O(g)         △H = —16.7kJ/mol

    C．N2H4(g)+O2(g)=N2(g)+2H2O(l)           △H = —534.4kJ/mol

    D．N2H4(g)+O2(g)=N2(g)+2H2O(g)           △H = —534.4kJ/mol

     

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    已知1g火箭燃料肼（N2H4）气体燃烧生成N2和H2O（g）时，放出16.7kJ的热量，则该反应的热化学方程式正确的是

    A．N2H4+O2=N2+2H2O                           △H = —534.4kJ/mol

    B．N2H4(g)+ O2(g)= N2(g)+2H2O(g)         △H = —16.7kJ/mol

    C．N2H4(g)+O2(g)=N2(g)+2H2O(l)          △H = —534.4kJ/mol

    D．N2H4(g)+O2(g)=N2(g)+2H2O(g)         △H = —534.4kJ/mol

     

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    已知1g火箭燃料肼（N2H4）气体燃烧生成N2和H2O（g）时，放出16.7kJ的热量，则该反应的热化学方程式正确的是

    A．N2H4+O2=N2+2H2O                           △H = —534.4kJ/mol

    B．N2H4(g)+ O2(g)= N2(g)+2H2O(g)         △H = —16.7kJ/mol

    C．N2H4(g)+O2(g)=N2(g)+2H2O(l)          △H = —534.4kJ/mol

    D．N2H4(g)+O2(g)=N2(g)+2H2O(g)         △H = —534.4kJ/mol

     

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    已知1g火箭燃料肼（N2H4）气体燃烧生成N2和H2O（g）时，放出16.7kJ的热量，则该反应的热化学方程式正确的是

    A．N2H4+O2=N2+2H2O                 △H =－534.4kJ/mol

    B．N2H4（g）+O2(g)=N2(g)+2H2O(g)           △H =－534.4kJ/mol

    C． N2H4（g）+O2(g)=N2(g)+2H2O(g)         △H = +534.4kJ/mol

    D．N2H4（g）+O2(g)= N2(g)+H2O(g)△H =－16.7kJ/mol

     

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