饮用水中的NO3-对人类健康会产生危害,为了降低饮用水中NO3-的浓度

饮用水中的NO3-对人类健康会产生危害,为了降低饮用水中NO3-的浓度,某饮用水研究人员提出,在碱性条件下用铝粉将NO3-还原为N2,其化学方程式为:10Al+6NaNO3+4NaOH=10NaAlO2+3N2+2H2O。请回答下列问题:

(1)上述反应中,氧化剂是           氧化产物是          

(2)上述反应中,若有5mol铝原子参与反应,则转移的电子为       mol,用“双线桥法”表示反应中电子转移的方向和数目:

10 Al + 6 NaNO3 + 4 NaOH =10 NaAlO2 + 3 N2↑ + 2 H2O

 

答案

(1)上述反应中,氧化剂是NaNO3氧化产物是NaAlO2

(2)上述反应中,若有5mol铝原子参与反应,则转移的电子为15mol,用“双线桥法”表示反应中电子转移的方向和数目:(略)

10 Al + 6 NaNO3 + 4 NaOH =10 NaAlO2 + 3 N2↑ + 2 H2O

解析:略

 

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