Question

ÏÂÁÐÀë×Ó·½³ÌʽÊéд²»ÕýÈ·µÄÊÇ

A£®AlCl3ÈÜÒºÓëÉÕ¼îÈÜÒº·´Ó¦£¬µ±n£¨OH-£©£ºn£¨Al3+£©=7£º2ʱ£¬ 2Al3+ + 7OH- = Al£¨OH£©3¡ý+ AlO2- + 2H2O

B£®Cl2ÓëFeBr2ÈÜÒº·´Ó¦£¬µ±n£¨Cl2£©£ºn£¨FeBr2£©=1£º1ʱ£¬ 2Fe2+ + 4Br- +3Cl2 =" 2" Fe3+ + 2Br2 + 6Cl-

C£®CuCl2ÈÜÒºÓëNaHSÈÜÒº·´Ó¦£¬µ±n£¨CuCl2£©£ºn£¨NaHS£©=1£º2ʱ Cu2£«+2HS£­= CuS¡ý+2H2S¡ü

D£®FeÓëÏ¡ÏõËá·´Ó¦£¬µ±n£¨Fe£©£ºn£¨HNO3£©=1£º2ʱ£¬

3 Fe +2NO₃^- +8H⁺ =" 3" Fe²⁺ +2NO¡ü+4H₂O

Answer 1

B

½âÎö´ð°¸£ºB
B¡¢²»ÕýÈ·£¬Ó¦ÎªCl₂ÓëFeBr₂ÈÜÒº·´Ó¦£¬µ±n£¨Cl₂£©£ºn£¨FeBr₂£©=1£º1ʱ£¬
2Fe²⁺ + 2Br^- +2Cl₂ =" 2" Fe³⁺ + 1Br₂ + 4Cl^-