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氯及其化合物

> (CN) 2、(SCN) 2、(OCN) 2称“类卤素”，与卤素单质的性质相似，而其阴离子性质也相似，如：2Fe + 3(SCN) 2 ="==" 2Fe(SCN) 3，2Fe + 3Cl 2 ="==" 2FeCl 3。以此判断下列化学方程式中错误的是 A．(CN)2 + H2O HCN + HCNO B．(SCN)2 + 2Cu 2CuSCN C．(OCN)2 + 2NaOH ="==" NaOCN + NaOCNO + H2O D．MnO2 + 4HSCN(浓) (SCN)2 + Mn(SCN)2 + 2H2O

问题：

发布时间：2024-09-12

(CN) ₂、(SCN) ₂、(OCN) ₂称“类卤素”，与卤素单质的性质相似，而其阴离子性质也相似，如：2Fe + 3(SCN) ₂ ="==" 2Fe(SCN) ₃，2Fe + 3Cl ₂ ="==" 2FeCl ₃。以此判断下列化学方程式中错误的是

A．(CN)₂ + H₂O HCN + HCNO

B．(SCN)₂ + 2Cu 2CuSCN

C．(OCN)₂ + 2NaOH ="==" NaOCN + NaOCNO + H₂O

D．MnO₂ + 4HSCN(浓) (SCN)₂ + Mn(SCN)₂ + 2H₂O

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