氢叠氮酸(HN3)与醋酸性质相近,其盐稳定,但受撞击时易迅速发生反

氢叠氮酸(HN3)与醋酸性质相近,其盐稳定,但受撞击时易迅速发生反应,生成氮气。关于氢叠氮酸以下说法:①NaN3的水溶液呈碱性 ②固体HN3属分子晶体 ③固体NaN3属离子化合物 ④NaN3可用于小汽车防撞保护气囊,其中正确的是

A.①②③④       B.①②③         C.②③④          D.①③④

 

答案

A

解析:

 

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