Question

1£®½«Ñõ»¯Ìú»¹Ô­ÎªÌúµÄ¼¼ÊõÔÚÈËÀàÎÄÃ÷µÄ½ø²½ÖÐÕ¼ÓÐÊ®·ÖÖØÒªµÄµØλ£®Á¶Ìú¸ß¯Öз¢ÉúµÄ¹Ø¼ü·´Ó¦ÈçÏ£º
C£¨s£©+O₂£¨g£©¨TCO₂£¨g£©¡÷H=-393.5kJ/mo1
CO₂£¨g£©+C£¨s£©¨T2CO£¨g£©¡÷H=+172.46kJ/mo1
Fe₂O₃+CO¡úFe+CO₂
ÈôÒÑÖª£º$2Fe£¨s£©+\frac{3}{2}{O_2}£¨g£©¨TF{e_2}{O_3}£¨S£©¡÷H=-824.21kJ/mo1$
¸ù¾ÝÉÏÃæÈý¸öÈÈ»¯Ñ§·´Ó¦·½³Ìʽ£¬»Ø´ðÏÂÁÐÎÊÌ⣺
£¨1£©COµÄȼÉÕÈÈΪ282.98KJ/mol£»Ð´³öÆäÈÈ»¯Ñ§·´Ó¦·½³ÌʽCO£¨g£©+$\frac{1}{2}$O₂£¨g£©=CO₂£¨g£©¡÷H=-282.98KJ/mol£®
£¨2£©¸ß¯ÄÚFe₂O₃±»CO»¹Ô­ÎªFeµÄÈÈ»¯Ñ§·´Ó¦·½³ÌʽΪFe₂O₃£¨s£©+3CO£¨g£©=2Fe£¨s£©+3CO₂£¨g£©¡÷H=-24.74kJ•mol^-1£®
£¨3£©Á¶ÖÆ1tº¬Ìú96%µÄÉúÌúËùÐ轹̿µÄÀíÂÛÓÃÁ¿ÊÇ0.31t£®£¨±£ÁôÁ½Î»ÓÐЧÊý×Ö£©

Answer 1

·ÖÎö £¨1£©È¼ÉÕÈÈÊÇ1mol¿ÉȼÎïÍêȫȼÉÕÉú³ÉÎȶ¨Ñõ»¯Îï·Å³öµÄÈÈÁ¿£¬½áºÏÈÈ»¯Ñ§·½³ÌʽºÍ¸Ç˹¶¨ÂɼÆËãµÃµ½£»
£¨2£©¢ÙC£¨s£©+O₂£¨g£©¨TCO₂£¨g£©¡÷H=-393.5kJ•mol^-1
¢ÚCO₂£¨g£©+C£¨s£©¨T2CO£¨g£©¡÷H=172.46kJ•mol^-1
¢Û2Fe£¨s£©+$\frac{3}{2}$O₂£¨g£©¨TFe₂O₃£¨s£©¡÷H=-824.21kJ•mol^-1
Ôò¸ù¾Ý¸Ç˹¶¨ÂÉ¢Ù¡Á$\frac{3}{2}$-¢Ú¡Á$\frac{3}{2}$-¢Û½øÐзÖÎö¼ÆË㣻
£¨3£©¸ù¾ÝÁ¶ÌúµÄ·½³Ìʽ2C+O₂$\frac{\underline{\;µãȼ\;}}{\;}$2CO£¬Fe₂O₃+3CO$\frac{\underline{\;¸ßÎÂ\;}}{\;}$2Fe+3CO₂½øÐмÆË㣮

½â´ð ½â£º£¨1£©¢ÙC£¨s£©+O₂£¨g£©=CO₂£¨g£©¡÷H=-393.5 kJ•mol^-1 
¢ÚCO₂£¨g£©+C£¨s£©=2CO£¨g£©¡÷H=172.46 kJ•mol^-1 
ÒÀ¾Ý¸Ç˹¶¨ÂɼÆËã¢Ù-¢ÚµÃµ½£º2CO£¨g£©+O₂£¨g£©=2CO₂£¨g£©¡÷H=-565.96KJ/mol£¬
ÒÀ¾ÝȼÉÕÈȸÅÄî¿ÉÖª£¬Ò»Ñõ»¯Ì¼È¼ÉÕÈÈΪ282.98KJ/mol£¬ÈÈ»¯Ñ§·½³ÌʽΪ£ºCO£¨g£©+$\frac{1}{2}$O₂£¨g£©=CO₂£¨g£©¡÷H=-282.98KJ/mol£¬
¹Ê´ð°¸Îª£º282.98KJ/mol£¬CO£¨g£©+$\frac{1}{2}$O₂£¨g£©=CO₂£¨g£©¡÷H=-282.98KJ/mol£»
£¨2£©¢ÙC£¨s£©+O₂£¨g£©¨TCO₂£¨g£©¡÷H=-393.5kJ•mol^-1
¢ÚCO₂£¨g£©+C£¨s£©¨T2CO£¨g£©¡÷H=172.46kJ•mol^-1
¢Û2Fe£¨s£©+$\frac{3}{2}$O₂£¨g£©¨TFe₂O₃£¨s£©¡÷H=-824.21kJ•mol^-1
Ôò¸ù¾Ý¸Ç˹¶¨ÂÉ¢Ù¡Á$\frac{3}{2}$-¢Ú¡Á$\frac{3}{2}$--¢Û£¬µÃFe₂O₃£¨s£©+3CO£¨g£©=2Fe£¨s£©+3CO₂£¨g£©¡÷H=-393.5¡Á$\frac{3}{2}$-172.46¡Á$\frac{3}{2}$+824.2=-24.74kJ•mol^-1£¬
¹Ê´ð°¸Îª£ºFe₂O₃£¨s£©+3CO£¨g£©=2Fe£¨s£©+3CO₂£¨g£©¡÷H=-24.74kJ•mol^-1£»
£¨3£©ÉèCOÖÊÁ¿Îªx
Fe₂O₃+3CO$\frac{\underline{\;¸ßÎÂ\;}}{\;}$2Fe+3CO₂
          84             112
         x               0.96t
x=0.72t
ÉèCµÄÖÊÁ¿Îªy
2C+O₂$\frac{\underline{\;¸ßÎÂ\;}}{\;}$2CO
24               56
y                 0.72t
y=0.31t
¹Ê´ð°¸Îª£º0.31t£»

µãÆÀ ±¾Ì⿼²é¸Ç˹¶¨ÂɵÄÓ¦ÓÃÒÔ¼°»¯Ñ§·½³ÌʽµÄÓйؼÆË㣬ÕýÈ·Ó¦ÓøÇ˹¶¨ÂÉÊǽⱾÌâ¹Ø¼ü£¬ÌâÄ¿ÄѶȲ»´ó£®