Question

ÒÑÖªÏÂÁÐÈÈ»¯Ñ§·½³Ìʽ£º¢Ù2H₂£¨g£©+O₂£¨g£©=2H₂O£¨l£©¡÷H=-570kJ/mol£¬
¢ÚH₂£¨g£©+

1

2

O₂£¨g£©=H₂O£¨g£©¡÷H=-241.8kJ/mol£¬
¢ÛC£¨g£©+

1

2

O₂£¨g£©=CO £¨g£©¡÷H=-110.5KJ/moL£¬
¢ÜC£¨s£©+O₂£¨g£©=CO₂£¨g£©¡÷H=-393.5KJ/moL£®»Ø´ðÏÂÁи÷ÎÊ£º
£¨1£©ÉÏÊö·´Ó¦ÖÐÊôÓÚ·ÅÈÈ·´Ó¦µÄÊÇ

 

£¨2£©CµÄȼÉÕÈÈΪ

 

£¨3£©È¼ÉÕ10gH₂Éú³ÉҺ̬ˮ£¬·Å³öµÄÈÈÁ¿Îª

 

£®
£¨4£©COµÄȼÉÕÈÈΪ

 

£¬±íʾCOȼÉÕÈȵÄÈÈ»¯Ñ§·½³ÌʽΪ

 

£®

Answer 1

¿¼µã£ºÎüÈÈ·´Ó¦ºÍ·ÅÈÈ·´Ó¦,·´Ó¦ÈȺÍìʱä

רÌ⣺»¯Ñ§·´Ó¦ÖеÄÄÜÁ¿±ä»¯

·ÖÎö£º£¨1£©¡÷H£¼0µÄ·´Ó¦Îª·ÅÈÈ·´Ó¦£»
£¨2£©È¼ÉÕÈÈÊÇ1mol¿ÉȼÎïÍêȫȼÉÕÉú³ÉÎȶ¨Ñõ»¯Îïʱ·Å³öµÄÈÈÁ¿£»
£¨3£©ÒÀ¾ÝÈÈ»¯Ñ§·½³Ìʽ¢Ù¼ÆËãµÃµ½£»
£¨4£©ÒÀ¾Ý¸Ç˹¶¨ÂɽáºÏÈÈ»¯Ñ§·½³Ìʽ¢Û¢Ü¼ÆËãµÃµ½£»

½â´ð£º ½â£º£¨1£©£©¡÷H£¼0µÄ·´Ó¦Îª·ÅÈÈ·´Ó¦£¬¢Ù¢Ú¢Û¢Ü·´Ó¦µÄìʱ䶼СÓÚ0£»
¹Ê´ð°¸Îª£º¢Ù¢Ú¢Û¢Ü£»
£¨2£©±íʾCOȼÉÕÈȵÄÈÈ»¯Ñ§·½³ÌʽΪ£ºC£¨s£©+O₂£¨g£©=CO₂£¨g£©¡÷H=-393.5KJ/moL£¬¹ÊCOµÄȼÉÕÈÈΪ£º393.5KJ/mol£»
¹Ê´ð°¸Îª£º393.5KJ/mol£»
£¨3£©È¼ÉÕ10gH₂Éú³ÉҺ̬ˮ£¬·Å³öµÄÈÈÁ¿Îªx£¬¸ù¾ÝÏÂÁÐÈÈ»¯Ñ§·½³Ìʽ¼ÆË㣺
  2H₂£¨g£©+O₂ £¨g£©=2H₂O£¨l£©£»¡÷H=-570kJ?mol^-1
  4g                                 570KJ
  10g                                  x
x=1425KJ£»
¹Ê´ð°¸Îª£º1425KJ£»
£¨3£©ÒÀ¾ÝÈÈ»¯Ñ§·½³Ìʽ£º¢ÛC£¨s£©+

1

2

O₂ £¨g£©=CO£¨g£©£»¡÷H=-110.5kJ?mol^-1£»¢ÜC£¨s£©+O₂ £¨g£©=CO₂£¨g£©£»¡÷H=-393.5kJ?mol^-1 £»
ÒÀ¾Ý¸Ç˹¶¨ÂÉ¢Ü-¢ÛµÃµ½£ºCO£¨g£©+

1

2

O₂£¨g£©=CO₂£¨g£©¡÷H=-283KJ/mol
¹Ê´ð°¸Îª£º283KJ/mol£»CO£¨g£©+

1

2

O₂£¨g£©=CO₂£¨g£©¡÷H=-283KJ/mol£®

µãÆÀ£º±¾Ì⿼²éÁËȼÉÕÈȵļÆËãÅжϣ¬·´Ó¦ÈÈ»¯Ñ§·½³ÌʽµÄ¼ÆËãÓ¦Ó㬸Ç˹¶¨ÂɵļÆËã·ÖÎö£¬ÌâÄ¿½Ï¼òµ¥£®