ÌâÄ¿ÄÚÈÝ

2£®¾­Ñо¿±íÃ÷£¬Fe£¨SCN£©3ÊÇÅäºÏÎFe3+ÓëSCN-²»½öÄÜÒÔ1£º3 µÄ¸öÊý±ÈÅäºÏ£¬»¹¿ÉÒÔÆäËû¸öÊý±ÈÅäºÏ£®Çë°´ÒªÇóÌî¿Õ£º
£¨1£©ÈôËùµÃFe3+ºÍSCN-µÄÅäºÏÎïÖУ¬Ö÷ÒªÊÇFe3+ÓëSCN-ÒÔ¸öÊý±È1£º1ÅäºÏËùµÃÀë×ÓÏÔѪºìÉ«£®¸ÃÀë×ÓµÄÀë×Ó·ûºÅÊÇ[Fe£¨SCN£©]2+£®
£¨2£©ÈôFe3+ÓëSCN-ÒÔ¸öÊý±È1£º5ÅäºÏ£¬ÔòFeCl3ÓëKSCNÔÚË®ÈÜÒºÖз¢Éú·´Ó¦µÄ»¯Ñ§·½³Ìʽ¿ÉÒÔ±íʾΪFeCl3+5KSCN=K2[Fe£¨SCN£©5]+3KCl£®

·ÖÎö £¨1£©Fe3+ÓëSCN-ÒÔ¸öÊý±È1£º1ÅäºÏËùµÃÀë×ÓΪ[Fe£¨SCN£©]2+£»
£¨2£©Fe3+ÓëSCN-ÒÔ¸öÊý±È1£º5ÅäºÏËùµÃÀë×ÓΪ[Fe£¨SCN£©5]2-£¬¹ÊFeCl3ÓëKSCNÔÚË®ÈÜÒºÖз´Ó¦Éú³ÉK2[Fe£¨SCN£©5]ÓëKCl

½â´ð ½â£º£¨1£©¢ÙFe3+ÓëSCN-ÒÔ¸öÊý±È1£º1ÅäºÏÉú³É´øÓÐÁ½¸öÕýµçºÉµÄÀë×Ó£º[Fe£¨SCN£©]2+£¬
¹Ê´ð°¸Îª£º[Fe£¨SCN£©]2+£»
£¨2£©Fe3+ÓëSCN-ÒÔ¸öÊý±È1£º5ÅäºÏËùµÃÀë×ÓΪ[Fe£¨SCN£©5]2-£¬¹ÊFeCl3ÓëKSCNÔÚË®ÈÜÒºÖз´Ó¦Éú³ÉK2[Fe£¨SCN£©5]ÓëKCl£¬ËùÒԵķ´Ó¦·½³ÌʽΪ£ºFeCl3+5KSCN=K2[Fe£¨SCN£©5]+3KCl£¬
¹Ê´ð°¸Îª£ºFeCl3+5KSCN=K2[Fe£¨SCN£©5]+3KCl£®

µãÆÀ ±¾Ì⿼²éÁËÅäºÏÎïµÄÐγɼ°Ó¦Óã¬ÌâÄ¿ÄѶȲ»´ó£¬Ã÷È·ÅäºÏÎïµÄ×é³É¡¢½á¹¹ÓëÐÔÖÊΪ½â´ð¹Ø¼ü£¬ÊÔÌâ²àÖØ¿¼²éѧÉúµÄ·ÖÎö¡¢Àí½âÄÜÁ¦¼°ÖªÊ¶Ç¨ÒÆÄÜÁ¦£®

Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿
17£®ÏÖÓÐA¡¢B¡¢C¡¢D¡¢E¡¢FÁùÖÖ»¯ºÏÎÆäÒõÑôÀë×Ó¾ù²»Í¬£®ÒÑÖªËüÃǵÄÑôÀë×ÓÊÇK+¡¢Ag+¡¢Ca2+¡¢Ba2+¡¢Fe2+¡¢Al3+£¬ÒõÀë×ÓÊÇCl-¡¢OH-¡¢CH3COO-¡¢NO3-¡¢SO42-¡¢CO32-£¬½«ËüÃÇ·Ö±ðÅä³ÉÈÜÒº½øÐÐÈçÏÂʵÑ飺
¢Ù²âµÃÈÜÒºA¡¢C¡¢E³Ê¼îÐÔ£¬ÇÒ¼îÐÔΪA£¾E£¾C£»
¢ÚÏòBÈÜÒºÖеμÓÏ¡°±Ë®£¬ÏȳöÏÖ³Áµí£¬³ÖÐøµÎ¼Ó°±Ë®£¬³ÁµíÏûʧ£»
¢ÛÏòDÈÜÒºÖеμÓBa£¨NO3£©2ÈÜÒº£¬ÎÞÃ÷ÏÔÏÖÏó£»
¢ÜÏòFÈÜÒºÖеμӰ±Ë®£¬Éú³É°×É«Ðõ×´³Áµí£¬³ÁµíѸËÙ±ä³É»ÒÂÌÉ«£¬×îºó±ä³ÉºìºÖÉ«£®
ÒÀ¾ÝÉÏÊöʵÑéÏÖÏ󣬻شðÏÂÁÐÎÊÌ⣺
£¨1£©ÊµÑé¢ÜÖеÄÀë×Ó·½³ÌʽÊÇFe2++2NH3•H2O=Fe£¨OH£©2¡ý+2NH4+¡¢4Fe£¨OH£©2+O2+2H2O=4Fe£¨OH£©3£»
£¨2£©EÈÜÒºÊÇ̼Ëá¼Ø£¬ÅбðÒÀ¾ÝÊÇÓÉ¢ÙÖмîÐÔÇ¿ÈõµÄ˳Ðò¿ÉÖª£¬EÊÇ̼ËáÑΣ¬ÁùÖÖÑôÀë×ÓÖпÉÒÔÓë̼Ëá¸ùÐγɿÉÈÜÐÔÑεÄÖ»ÓмØÀë×Ó£¬ËùÒÔEÊÇ̼Ëá¼Ø£»
£¨3£©CÈÜÒºÏÔ¼îÐÔµÄÔ­ÒòCH3COO-+H2O?CH3COOH+OH-£®-£¨ÓÃÀë×Ó·½³Ìʽ½âÊÍ£©
£¨4£©³£ÎÂÏÂpH¾ùΪ12µÄEµÄË®ÈÜÒººÍAµÄË®ÈÜÒºÖÐË®µçÀë³öµÄÇâÀë×ÓŨ¶ÈÖ®±ÈΪ1010£º1£»
£¨5£©Ïò20mL2mol/LDÈÜÒºÖмÓÈë30mlAÈÜÒº£¬³ä·Ö·´Ó¦ºóµÃµ½0.78¿Ë³Áµí£¬ÔòAÈÜÒºµÄÎïÖʵÄÁ¿Å¨¶È¿ÉÄÜÊÇ0.5»ò2.5mol/L£®

Î¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨µç»°£º027-86699610 ¾Ù±¨ÓÊÏ䣺58377363@163.com

¾«Ó¢¼Ò½ÌÍø