ÌâÄ¿ÄÚÈÝ

20£®ÒÑÖªµ¥ÖÊÁòÔÚͨ³£Ìõ¼þÏÂÒÔS8£¨Ð±·½Áò£©µÄÐÎʽ´æÔÚ£¬¶øÔÚÕôÆø״̬ʱ£¬º¬ÓÐS2¡¢S4¡¢S6¼°S8µÈ¶àÖÖͬËØÒìÐÎÌ壬ÆäÖÐS4¡¢S6ºÍS8¾ßÓÐÏàËƵĽṹÌص㣬Æä½á¹¹Èçͼ1Ëùʾ£º
£¨1£©ÔÚÒ»¶¨Î¶ÈÏ£¬²âµÃÁòÕôÆøµÄƽ¾ùĦ¶ûÖÊÁ¿Îª96g/mol£¬Ôò¸ÃÕôÆøÖÐS2·Ö×ÓµÄÌå»ý·ÖÊý²»Ð¡ÓÚ50%£®
£¨2£©ÔÚÒ»¶¨Ìõ¼þÏ£¬S8£¨s£©ºÍO2£¨g£©·¢Éú·´Ó¦ÒÀ´Îת»¯ÎªSO2£¨g£©ºÍSO3£¨g£©£®·´Ó¦¹ý³ÌºÍÄÜÁ¿¹Øϵ¿ÉÓÃͼ2¼òµ¥±íʾ£¨Í¼Öеġ÷H±íʾÉú³É1mol²úÎïµÄÊý¾Ý£©£®
¢Ùд³ö±íʾS8ȼÉÕÈȵÄÈÈ»¯Ñ§·½³ÌʽS8£¨s£©+8O2£¨g£©¨T8SO2£¨g£©¡÷H=-8akJ•mol-1£®
¢ÚÈôÒÑÖªSO2·Ö×ÓÖÐÁòÑõ¼üµÄ¼üÄÜΪdkJ•mol-1£¬O=O¼üµÄ¼üÄÜΪekJ•mol-1£¬ÔòS8·Ö×ÓÖÐS-S¼üµÄ¼üÄÜΪ£¨2d-a-e£©kJ•mol-1£®

·ÖÎö £¨1£©µ±S2¡¢S4 ʱS2·Ö×ÓµÄÌå»ý·ÖÊý×îС£¬½áºÏƽ¾ùÖµ·½·¨¼ÆËãÌå»ý·ÖÊý£»
£¨2£©¢ÙS8£¨s£©ºÍO2£¨g£©·¢Éú·´Ó¦×ª»¯ÎªSO2£¨g£©Ê±·ÅÈÈΪȼÉÕÈÈ£¬±ê×¢ÎïÖʾۼ¯×´Ì¬ºÍ·´Ó¦ìʱäд³öÈÈ»¯Ñ§·½³Ìʽ£»
¢ÚSO2·Ö×ÓÖÐÁòÑõ¼üµÄ¼üÄÜΪdkJ•mol-1£¬O=O¼üµÄ¼üÄÜΪekJ•mol-1£¬½áºÏ·´Ó¦ÈȵÈÓÚ·´Ó¦ÎïµÄ¼üÄÜ×ܺͼõÈ¥Éú³ÉÎï¼üÄÜ×ܺͼÆË㣮

½â´ð ½â£º£¨1£©µ±S2¡¢S4ʱS2·Ö×ÓµÄÌå»ý·ÖÊý×îС£¬ÉèS2ÎïÖʵÄÁ¿Îªx£¬S4ÎïÖʵÄÁ¿Îªy£¬Ôò$\frac{64x+128y}{x+y}$=96£¬½âµÃx£ºy=1£º1£¬ÏàͬÌõ¼þÏÂÆøÌåÎïÖʵÄÁ¿Ö®±ÈµÈÓÚÌå»ýÖ®±ÈÎïµÃµ½£¬¸ÃÕôÆøÖÐS2·Ö×ÓµÄÌå»ý·ÖÊý²»Ð¡ÓÚ$\frac{1}{1+1}$¡Á100%=50%£¬¹Ê´ð°¸Îª£º50%£»
£¨2£©¢ÙS8£¨s£©ºÍO2£¨g£©·¢Éú·´Ó¦×ª»¯ÎªSO2£¨g£©Ê±·ÅÈÈΪȼÉÕÈÈ£¬ÓÉͼ¿ÉÖªÉú³É1molSO2£¨g£©·Å³öÈÈÁ¿ÎªakJ£¬ÔòȼÉÕÈȵÄS8£¨s£©+8O2£¨g£©¨T8SO2£¨g£©¡÷H=-8akJ•mol-1£¬¹Ê´ð°¸Îª£ºS8£¨s£©+8O2£¨g£©¨T8SO2£¨g£©¡÷H=-8akJ•mol-1£»
¢ÚÒÑÖªÁòÑõ¼ü£¨S=O£©µÄ¼üÄÜΪd kJ/mol£¬ÑõÑõ¼ü£¨O=O£©µÄ¼üÄÜΪe kJ/mol£¬ÔòÉèS8·Ö×ÓÖÐÁòÁò¼ü¼üÄÜΪxKJ/mol£¬ÓÉS8£¨s£©+8O2£¨g£©=8SO2£¨g£©¡÷H=-8aKJ/mol¼°·´Ó¦ÈÈ=·´Ó¦ÎïµÄ¼üÄÜ×ܺÍ-Éú³ÉÎïµÄ¼üÄÜ×ܺͿÉÖª£¬8x+8e-16d=-8a£¬½âµÃx=2d-a-e£¬
¹Ê´ð°¸Îª£º£¨2d-a-e£©KJ/mol£®

µãÆÀ ±¾ÌâÒÔº¬ÁòÎïÖÊ¿¼²éÈÈ»¯Ñ§·´Ó¦¼°¼ÆË㣬Ϊ¸ßƵ¿¼µã£¬°ÑÎÕͼÏó¼°È¼ÉÕÈȵĸÅÄî¡¢·´Ó¦ÈÈÓë¼üÄܵĹØϵµÈΪ½â´ðµÄ¹Ø¼ü£¬²àÖØ·ÖÎöÓëÓ¦ÓÃÄÜÁ¦µÄ¿¼²é£¬ÌâÄ¿ÄѶȲ»´ó£®

Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿

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

¾«Ó¢¼Ò½ÌÍø