(分)(1)某一反应体系中有反应物和生成物共5种物质:S、H2S、HNO

(分)(1)某一反应体系中有反应物和生成物共5种物质:S、H2S、HNO3、NO、H2O。 

该反应中还原产物是______________________;若反应过程中转移了0.2

子,则氧化产物的质量是________________________

    (2)将过量Cl2 通入 FeBr2溶液中,反应的离子方程式为:________________________;

    (3)向NH4HCO3溶液中滴加少量的NaOH溶液,反应的离子方程式为______________;

    (4)观察如下反应,总结规律,然后完成下列问题:

Al(OH)3 +H2O Al(OH)4- + H+        NH3+H2ONH4+ OH-

①已知B(OH)3是一元弱酸,写出其电离方程式_____________________________

②N2H4是二元弱碱,写出其第二步电离方程式___________________      ____

答案

(2分)  (2分)

    ⑵(3分)

    ⑶(3分)

    ⑷①(3分)

    ②(3分)

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