Question

20£®CH₄ºÍCO₂¿ÉÒÔÖÆÔì¼ÛÖµ¸ü¸ßµÄ»¯Ñ§²úÆ·£®ÒÑÖª£º
CH₄£¨g£©+2O₂£¨g£©¨TCO₂£¨g£©+2H₂O£¨g£©¡÷H1=a kJ/mol
CO£¨g£©+H₂O£¨g£©¨TCO₂£¨g£©+H₂£¨g£©¡÷H₂=b kJ/mol
2CO£¨g£©+O₂£¨g£©¨T2CO₂£¨g£©¡÷H₃=c kJ/mol
£¨1£©Ð´³öÓɼ×ÍéÓë¶þÑõ»¯Ì¼ÖÆÒ»Ñõ»¯Ì¼ºÍÇâÆøµÄÈÈ»¯Ñ§·½³Ìʽ£ºCH₄£¨g£©+CO₂£¨g£©?CO£¨g£©+2H₂£¨g£©¡÷H=£¨a+2b-2c£©kJ/mol£®
£¨2£©Ò»¶¨Ìõ¼þÏ£¬µÈÎïÖʵÄÁ¿µÄ£¨1£©Öз´Ó¦Éú³ÉµÄÆøÌå¿ÉºÏ³É¶þ¼×ÃÑ£¨CH₃OCH₃£©£¬Í¬Ê±»¹²úÉúÁËÒ»ÖֿɲÎÓë´óÆøÑ­»·µÄÎÞ»ú»¯ºÏÎ¸Ã·´Ó¦µÄ»¯Ñ§·½³ÌʽΪ3CO+3H₂¨TCH₃OCH₃+CO₂£®

Answer 1

·ÖÎö £¨1£©ÒÑÖª¢ÙCH₄£¨g£©+2O₂£¨g£©?CO₂£¨g£©+2H₂O£¨g£©¡÷H₁=a kJ/mol
¢ÚCO£¨g£©+H₂O£¨g£©?CO₂£¨g£©+H₂£¨g£©¡÷H₂=b kJ/mol
¢Û2CO£¨g£©+O₂£¨g£©?2CO₂£¨g£©¡÷H₃=c kJ/mol
¢Ù+2¡Á¢Ú-2¡Á¢ÛµÃ£ºCH₄£¨g£©+CO₂£¨g£©?CO£¨g£©+2H₂£¨g£©¡÷H£¬ÒÀ¾Ý¸Ç˹¶¨ÂɼÆËã·´Ó¦ÈÈ£»
£¨2£©¾Ý·´Ó¦ÎïºÍÉú³ÉÎï¿ÉÖª£¬²ÎÓë´óÆøÑ­»·µÄÎÞ»ú»¯ºÏÎïΪ¶þÑõ»¯Ì¼£¬¾ÝÔ­×ÓÊغãÊéд»¯Ñ§·½³Ìʽ£®

½â´ð ½â£º£¨1£©ÒÑÖª¢ÙCH₄£¨g£©+2O₂£¨g£©?CO₂£¨g£©+2H₂O£¨g£©¡÷H₁=a kJ/mol
¢ÚCO£¨g£©+H₂O£¨g£©?CO₂£¨g£©+H₂£¨g£©¡÷H₂=b kJ/mol
¢Û2CO£¨g£©+O₂£¨g£©?2CO₂£¨g£©¡÷H₃=c kJ/mol
¾Ý¸Ç˹¶¨ÂÉ£¬¢Ù+2¡Á¢Ú-2¡Á¢ÛµÃ£ºCH₄£¨g£©+CO₂£¨g£©?CO£¨g£©+2H₂£¨g£©¡÷H=£¨a+2b-2c£©kJ/mol£¬
¹Ê´ð°¸Îª£ºCH₄£¨g£©+CO₂£¨g£©?CO£¨g£©+2H₂£¨g£©¡÷H=£¨a+2b-2c£©kJ/mol£»
£¨2£©¾Ý·´Ó¦ÎïºÍÉú³ÉÎï¿ÉÖª£¬²ÎÓë´óÆøÑ­»·µÄÎÞ»ú»¯ºÏÎïΪ¶þÑõ»¯Ì¼£¬¾ÝÔ­×ÓÊغãÊéд»¯Ñ§·½³ÌʽΪ£º3CO+3H₂¨TCH₃OCH₃+CO₂£¬
¹Ê´ð°¸Îª£º3CO+3H₂¨TCH₃OCH₃+CO₂£®

µãÆÀ ±¾Ì⿼²éÁËÈÈ»¯Ñ§·½³ÌʽµÄÊéд£¬Ã÷È·¸Ç˹¶¨ÂɼÆËã·´Ó¦Èȵķ½·¨ÊǽâÌâ¹Ø¼ü£¬ÌâÄ¿ÄѶȲ»´ó£®