ÌâÄ¿ÄÚÈÝ
Ìú¡¢Í¼°Æ仯ºÏÎïÔÚÉú»î¡¢Éú²úÖÐÓй㷺ӦÓã®Çë»Ø´ðÏÂÁÐÎÊÌ⣺
£¨1£©»ÆÌú¿ó£¨FeS2£¬ÆäÖÐSΪ-1¼Û£©ÊÇÉú²úÁòËáºÍÒ±Á¶¸ÖÌúµÄÖØÒªÔÁÏ£®ÆäÖÐÒ»¸ö·´Ó¦Îª3FeS2+8O2
6SO2+Fe3O4£¬Ñõ»¯²úÎïΪ
£¨2£©ÓëÃ÷·¯ÏàËÆ£¬ÁòËáÌúÒ²¿ÉÓÃ×÷¾»Ë®¼Á£®Ä³×ÔÀ´Ë®³§ÓÃÂÈÆøºÍÂÌ·¯£¨FeSO4?7H2O£©Ò»Æð¾»Ë®£¬ÆäÔÀíΪ
£¨3£©¢Ù¸ÖÌúµÄµç»¯¸¯Ê´¼òµ¥Ê¾ÒâͼÈçÓÒ£¬½«¸ÃͼÉÔ×÷ÐÞ¸Ä ¼´¿É³ÉΪ¸ÖÌúµç»¯Ñ§·À»¤µÄ¼òµ¥Ê¾Òâͼ£¬ÇëÔÚÓÒͼÐéÏß¿òÄÚ×÷³öÐ޸ģ¬²¢ÓüýÍ·±ê³öµç×ÓÁ÷¶¯·½Ïò£®
¢Úд³öÐÞ¸ÄÇ°µÄ¸ÖÌúÎüÑõ¸¯Ê´Ê¯Ä«µç¼«µÄµç¼«·´Ó¦Ê½
£¨4£©¸ßÌúËá¼Ø£¨K2FeO4£©¿ÉÓÃ×÷¾»Ë®¼Á£¬Ò²¿ÉÓÃÓÚÖÆÔì¸ßÌúµç³Ø£®¸ßÌúµç³ØÊÇÒ»ÖÖÐÂÐͿɳäµçµç³Ø£¬ÓëÆÕͨ¸ßÄܵç³ØÏà±È£¬¸Ãµç³ØÄܳ¤Ê±¼ä±£³ÖÎȶ¨µÄ·Åµçµçѹ£®¸ßÌúµç³ØµÄ×Ü·´Ó¦Îª
3Zn+2K2FeO4+8H2O 3Zn£¨OH£©2+2Fe£¨OH£©3+4KOH
¸Ãµç³Ø·ÅµçʱÕý¼«·´Ó¦Ê½Îª
Óøõç³Øµç½â100mL 1mol?L-1µÄAgNO3ÈÜÒº£¬µ±µç·ÖÐͨ¹ý0.1mol µç×Óʱ£¬±»µç½âÈÜÒºµÄpHΪ
£¨5£©Ñõ»¯ÑÇÍÊÇÒ»ÖÖ°ëµ¼Ìå²ÄÁÏ£¬³£ÓÃ×÷ÖÆÔìÕûÁ÷Æ÷µÄ²ÄÁÏ£¬»¹¿ÉÒÔÓÃÓÚ¹âÕÕÌõ¼þÏÂË®·Ö½âµÄ´ß»¯¼ÁºÍÅ©×÷ÎïµÄɱ¾ú¼Á£®
ÓÃÓÒͼװÖÿÉÖƵÃÑõ»¯ÑÇÍ£¬ÊÔд³öÑô¼«µÄµç¼«·´Ó¦Ê½
£¨1£©»ÆÌú¿ó£¨FeS2£¬ÆäÖÐSΪ-1¼Û£©ÊÇÉú²úÁòËáºÍÒ±Á¶¸ÖÌúµÄÖØÒªÔÁÏ£®ÆäÖÐÒ»¸ö·´Ó¦Îª3FeS2+8O2
| ||
SO2¡¢Fe3O4
SO2¡¢Fe3O4
£¬ÈôÓÐ3mol FeS2²Î¼Ó·´Ó¦£¬×ªÒƵç×ÓµÄÎïÖʵÄÁ¿Îª32mol
32mol
£®£¨2£©ÓëÃ÷·¯ÏàËÆ£¬ÁòËáÌúÒ²¿ÉÓÃ×÷¾»Ë®¼Á£®Ä³×ÔÀ´Ë®³§ÓÃÂÈÆøºÍÂÌ·¯£¨FeSO4?7H2O£©Ò»Æð¾»Ë®£¬ÆäÔÀíΪ
Cl2+2Fe2+=2Fe3++2Cl-
Fe3++3H2O?Fe£¨OH£©3£¨½ºÌ壩+3H+
Fe3++3H2O?Fe£¨OH£©3£¨½ºÌ壩+3H+
Cl2+2Fe2+=2Fe3++2Cl-
Fe3++3H2O?Fe£¨OH£©3£¨½ºÌ壩+3H+
£¨ÓÃÀë×Ó·½³Ìʽ±íʾ£©£®Fe3++3H2O?Fe£¨OH£©3£¨½ºÌ壩+3H+
£¨3£©¢Ù¸ÖÌúµÄµç»¯¸¯Ê´¼òµ¥Ê¾ÒâͼÈçÓÒ£¬½«¸ÃͼÉÔ×÷ÐÞ¸Ä ¼´¿É³ÉΪ¸ÖÌúµç»¯Ñ§·À»¤µÄ¼òµ¥Ê¾Òâͼ£¬ÇëÔÚÓÒͼÐéÏß¿òÄÚ×÷³öÐ޸ģ¬²¢ÓüýÍ·±ê³öµç×ÓÁ÷¶¯·½Ïò£®
¢Úд³öÐÞ¸ÄÇ°µÄ¸ÖÌúÎüÑõ¸¯Ê´Ê¯Ä«µç¼«µÄµç¼«·´Ó¦Ê½
O2+2H2O+4e-=4OH-£¬
O2+2H2O+4e-=4OH-£¬
£®£¨4£©¸ßÌúËá¼Ø£¨K2FeO4£©¿ÉÓÃ×÷¾»Ë®¼Á£¬Ò²¿ÉÓÃÓÚÖÆÔì¸ßÌúµç³Ø£®¸ßÌúµç³ØÊÇÒ»ÖÖÐÂÐͿɳäµçµç³Ø£¬ÓëÆÕͨ¸ßÄܵç³ØÏà±È£¬¸Ãµç³ØÄܳ¤Ê±¼ä±£³ÖÎȶ¨µÄ·Åµçµçѹ£®¸ßÌúµç³ØµÄ×Ü·´Ó¦Îª
3Zn+2K2FeO4+8H2O 3Zn£¨OH£©2+2Fe£¨OH£©3+4KOH
¸Ãµç³Ø·ÅµçʱÕý¼«·´Ó¦Ê½Îª
2FeO42-+8H2O+6e-=2Fe£¨OH£©3+10OH-
2FeO42-+8H2O+6e-=2Fe£¨OH£©3+10OH-
£®Óøõç³Øµç½â100mL 1mol?L-1µÄAgNO3ÈÜÒº£¬µ±µç·ÖÐͨ¹ý0.1mol µç×Óʱ£¬±»µç½âÈÜÒºµÄpHΪ
0
0
£¨ÈÜÒºÌå»ý±ä»¯ºöÂÔ²»¼Æ£©£®£¨5£©Ñõ»¯ÑÇÍÊÇÒ»ÖÖ°ëµ¼Ìå²ÄÁÏ£¬³£ÓÃ×÷ÖÆÔìÕûÁ÷Æ÷µÄ²ÄÁÏ£¬»¹¿ÉÒÔÓÃÓÚ¹âÕÕÌõ¼þÏÂË®·Ö½âµÄ´ß»¯¼ÁºÍÅ©×÷ÎïµÄɱ¾ú¼Á£®
ÓÃÓÒͼװÖÿÉÖƵÃÑõ»¯ÑÇÍ£¬ÊÔд³öÑô¼«µÄµç¼«·´Ó¦Ê½
2Cu-2e-+2OH-=Cu2O+H2O
2Cu-2e-+2OH-=Cu2O+H2O
£®·ÖÎö£º£¨1£©¸ù¾Ý»¯ºÏ¼ÛÅжÏÑõ»¯¼ÁºÍ»¹Ô¼Á£»¸ù¾Ýµç×ÓµÃʧ£¬µÃ³öSO2Óëµç×ÓÊýµÄ¹Øϵ£»
£¨2£©¸ù¾ÝÂÈÆøÄܽ«Fe2+Ñõ»¯³ÉFe3+£¬ÒÔ¼°Fe3+Ë®½âÉú³ÉFe£¨OH£©3½ºÌå¿ÉÒÔ¾»Ë®£»
£¨3£©¢Ù¸ù¾Ý½ðÊôµÄ·À»¤·½·¨£»¢Ú¸ù¾ÝÎüÑõ¸¯Ê´Ð´³öÕý¼«µÄµç¼«·´Ó¦£»
£¨4£©ÏÈд³ö¸º¼«µÄµç¼«·´Ó¦£¬ÀûÓÃ×Ü·´Ó¦-¸º¼«µÄµç¼«·´Ó¦=Õý¼«µÄµç¼«·´Ó¦£»¸ù¾Ýµç¼«·´Ó¦À´¼ÆË㣻
£¨5£©¸ù¾ÝÍ×÷Ñô¼«ÒÔ¼°ÐÅÏ¢À´½â´ð£»
£¨2£©¸ù¾ÝÂÈÆøÄܽ«Fe2+Ñõ»¯³ÉFe3+£¬ÒÔ¼°Fe3+Ë®½âÉú³ÉFe£¨OH£©3½ºÌå¿ÉÒÔ¾»Ë®£»
£¨3£©¢Ù¸ù¾Ý½ðÊôµÄ·À»¤·½·¨£»¢Ú¸ù¾ÝÎüÑõ¸¯Ê´Ð´³öÕý¼«µÄµç¼«·´Ó¦£»
£¨4£©ÏÈд³ö¸º¼«µÄµç¼«·´Ó¦£¬ÀûÓÃ×Ü·´Ó¦-¸º¼«µÄµç¼«·´Ó¦=Õý¼«µÄµç¼«·´Ó¦£»¸ù¾Ýµç¼«·´Ó¦À´¼ÆË㣻
£¨5£©¸ù¾ÝÍ×÷Ñô¼«ÒÔ¼°ÐÅÏ¢À´½â´ð£»
½â´ð£º½â£º£¨1£©·´Ó¦3FeS2+8O2
Fe3O4+6SO2£¬Ç°ºó¸÷ÔªËØ»¯ºÏ¼ÛµÄ±ä»¯Çé¿öÈçÏ£º
Fe£º+2¡ú+3£¬»¯ºÏ¼ÛÉý¸ß£»S£º-1¡ú+4£¬»¯ºÏ¼ÛÉý¸ß£»
O£º0¡ú-2£¬»¯ºÏ¼Û½µµÍ£»
Òò´Ë£¬ÔÚ·´Ó¦ÖÐFeS2»¹Ô¼Á£¬O2ÊÇÑõ»¯¼Á£¬Fe2O3¼ÈÊÇÑõ»¯²úÎïÒ²ÊÇ»¹Ô²úÎSO2¼ÈÊÇÑõ»¯²úÎïÒ²ÊÇ»¹Ô²úÎÔÚÉÏÊö·´Ó¦Öй²×ªÒÆ32¸öµç×Ó£¬ÓÐ3molFeS2²Î¼Ó·´Ó¦£¬×ªÒƵç×ÓµÄÎïÖʵÄÁ¿Îª32mol£»¹Ê´ð°¸Îª£ºSO2¡¢Fe3O4¡¢32mol£»
£¨2£©ÒòÂÈÆøÄܽ«Fe2+Ñõ»¯³ÉFe3+£¬ÒÔ¼°Fe3+Ë®½âÉú³ÉFe£¨OH£©3½ºÌå¿ÉÒÔ¾»Ë®£¬¹Ê´ð°¸Îª£ºCl2+2Fe2+=2Fe3++2Cl-
Fe3++3H2O Fe£¨OH£©3+3H+£»
£¨3£©¢Ù¸ù¾ÝÎþÉüÑô¼«µÄÒõ¼«±£»¤·¨¿ÉÖª£ºÐèÒª±£»¤µÄ½ðÊô×÷Òõ¼«£¬ÈçͼËù±íʾ£º
¢ÚÎüÑõ¸¯Ê´µÄÕý¼«µÄµç¼«·´Ó¦Îª£ºO2+2H2O+4e-=4OH-£¬¹Ê´ð°¸Îª£ºO2+2H2O+4e-=4OH-£»
£¨4£©¸º¼«µÄµç¼«·´Ó¦£º3Zn+6OH-=3Zn£¨OH£©2£¬Õý¼«µÄµç¼«·´Ó¦£º2FeO42-+8H2O+6e-=2Fe£¨OH£©3+10OH-£¬
¹Ê´ð°¸Îª£º2FeO42-+8H2O+6e-=2Fe£¨OH£©3+10OH-£»
Ñô¼«µÄµç¼«·´Ó¦£º40H--4e-=2H20+O2¡ü
0.1mol 0.1mol
ËùÒÔ²úÉúµÄH+µÄÎïÖʵÄÁ¿Îª 0.1mol£¬ÆäÎïÖʵÄÁ¿Å¨¶ÈΪ1mol/L£¬ËùÒÔPH=0£¬¹Ê´ð°¸Îª£º0£»
£¨5£©Í×÷Ñô¼«£¬Éú³ÉÁËCu2O£¬Ñô¼«µÄµç¼«·´Ó¦Ê½£º2Cu-2e-+2OH-=Cu2O+H2O£¬¹Ê´ð°¸Îª£º2Cu-2e-+2OH-=Cu2O+H2O£®
| ||
Fe£º+2¡ú+3£¬»¯ºÏ¼ÛÉý¸ß£»S£º-1¡ú+4£¬»¯ºÏ¼ÛÉý¸ß£»
O£º0¡ú-2£¬»¯ºÏ¼Û½µµÍ£»
Òò´Ë£¬ÔÚ·´Ó¦ÖÐFeS2»¹Ô¼Á£¬O2ÊÇÑõ»¯¼Á£¬Fe2O3¼ÈÊÇÑõ»¯²úÎïÒ²ÊÇ»¹Ô²úÎSO2¼ÈÊÇÑõ»¯²úÎïÒ²ÊÇ»¹Ô²úÎÔÚÉÏÊö·´Ó¦Öй²×ªÒÆ32¸öµç×Ó£¬ÓÐ3molFeS2²Î¼Ó·´Ó¦£¬×ªÒƵç×ÓµÄÎïÖʵÄÁ¿Îª32mol£»¹Ê´ð°¸Îª£ºSO2¡¢Fe3O4¡¢32mol£»
£¨2£©ÒòÂÈÆøÄܽ«Fe2+Ñõ»¯³ÉFe3+£¬ÒÔ¼°Fe3+Ë®½âÉú³ÉFe£¨OH£©3½ºÌå¿ÉÒÔ¾»Ë®£¬¹Ê´ð°¸Îª£ºCl2+2Fe2+=2Fe3++2Cl-
Fe3++3H2O Fe£¨OH£©3+3H+£»
£¨3£©¢Ù¸ù¾ÝÎþÉüÑô¼«µÄÒõ¼«±£»¤·¨¿ÉÖª£ºÐèÒª±£»¤µÄ½ðÊô×÷Òõ¼«£¬ÈçͼËù±íʾ£º
¢ÚÎüÑõ¸¯Ê´µÄÕý¼«µÄµç¼«·´Ó¦Îª£ºO2+2H2O+4e-=4OH-£¬¹Ê´ð°¸Îª£ºO2+2H2O+4e-=4OH-£»
£¨4£©¸º¼«µÄµç¼«·´Ó¦£º3Zn+6OH-=3Zn£¨OH£©2£¬Õý¼«µÄµç¼«·´Ó¦£º2FeO42-+8H2O+6e-=2Fe£¨OH£©3+10OH-£¬
¹Ê´ð°¸Îª£º2FeO42-+8H2O+6e-=2Fe£¨OH£©3+10OH-£»
Ñô¼«µÄµç¼«·´Ó¦£º40H--4e-=2H20+O2¡ü
0.1mol 0.1mol
ËùÒÔ²úÉúµÄH+µÄÎïÖʵÄÁ¿Îª 0.1mol£¬ÆäÎïÖʵÄÁ¿Å¨¶ÈΪ1mol/L£¬ËùÒÔPH=0£¬¹Ê´ð°¸Îª£º0£»
£¨5£©Í×÷Ñô¼«£¬Éú³ÉÁËCu2O£¬Ñô¼«µÄµç¼«·´Ó¦Ê½£º2Cu-2e-+2OH-=Cu2O+H2O£¬¹Ê´ð°¸Îª£º2Cu-2e-+2OH-=Cu2O+H2O£®
µãÆÀ£º±¾Ì⿼²éµÄ֪ʶµã½Ï¶à£¬ÓÐÒ»¶¨µÄÄѶȣ¬×¢Òâ»ù´¡ÖªÊ¶µÄ»ýÀÛ£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿