Question

2SO₂(g)+O₂ (g)= 2SO₃ (g)£¬·´Ó¦¹ý³ÌµÄÄÜÁ¿±ä»¯ÈçͼËùʾ¡£ÒÑÖª£º1 mol SO₂(g)Ñõ»¯Îª1 mol SO₃(g)µÄ¦¤H="-99" kJ/mol¡£

Çë»Ø´ðÏÂÁÐÎÊÌ⣺
£¨1£©Í¼ÖÐA¡¢C·Ö±ð±íʾ            ¡¢                £¬EµÄ´óС¶Ô¸Ã·´Ó¦µÄ·´Ó¦ÈÈÓÐÎÞÓ°Ï죿        ¡£¸Ã·´Ó¦Í¨³£ÓÃV₂O₅×÷´ß»¯¼Á£¬¼ÓV₂O₅»áʹͼÖÐBµãÉý¸ß»¹ÊǽµµÍ£¿        £¬ÀíÓÉÊÇ                                                             £»
£¨2£©Í¼ÖЦ¤H=             kJ/mol£»
£¨3£©Èç¹û·´Ó¦ËÙÂÊv£¨SO₂£©Îª0.05 mol/£¨L¡¤min£©,Ôòv£¨O₂£©=                 mol/£¨L¡¤min£©£»
£¨4£©ÒÑÖªµ¥ÖÊÁòµÄȼÉÕÈÈΪ296 kJ/mol£¬¼ÆËãÓÉS(s)Éú³É3 mol SO₃(g)µÄ¦¤H£¨ÒªÇó¼ÆËã¹ý³Ì£©¡£

Answer 1

£¨1£©·´Ó¦ÎïÄÜÁ¿ Éú³ÉÎïÄÜÁ¿ Ã»ÓÐÓ°Ïì ½µµÍ  ÒòΪ´ß»¯¼Á¸Ä±äÁË·´Ó¦Àú³Ì£¬ ʹ»î»¯ÄÜE½µµÍ  £¨2£©-198     £¨3£©0.025   
(4)S(s)+O₂(g)£½SO₂ (g)    ¦¤H₁£½£­296 kJ/mol  ¢Ù
SO₂(g)+ O₂(g)£½SO₃(g)  ¦¤H₂£½£­99 kJ/mol      ¢Ú
¢Ù¡Á3+¢Ú¡Á3µÃ 3S (s)+ O₂ (g)£½3SO₃(g)   ¦¤H£½(¦¤H₁+¦¤H₂)¡Á3£½£­1185 kJ/mol

ÊÔÌâ·ÖÎö£º(1)¸ù¾ÝͼÏñ¿ÉÖª£¬Í¼ÖÐA¡¢C·Ö±ð±íʾ·´Ó¦ÎïÄÜÁ¿ºÍÉú³ÉÎïÄÜÁ¿¡£EΪ»î»¯ÄÜ£¬Óë·´Ó¦ÈÈÎ޹أ¬µ«Ê¹Óô߻¯¼Á¿ÉÒÔ½µµÍ»î»¯ÄÜ¡£
£¨2£©Í¼ÖбíʾµÄÊÇ2molSO₂µÄ·´Ó¦£¬Òò´Ë¡÷H£½£­99¡Á2kJ/mol£½£­198 kJ/mol.
£¨3£©ÒÀ¾ÝËÙÂÊÖ®±ÈµÈÓÚ»¯Ñ§¼ÆÁ¿ÊýÖ®±È¿ÉÖª£¬v£¨O₂£©£½0.05 mol/£¨L¡¤min£©¡Â2£½0.025 mol/£¨L¡¤min£©.
£¨4£©S(s)+O₂(g)£½SO₂ (g)    ¦¤H₁£½£­296 kJ/mol  ¢Ù
SO₂(g)+ O₂(g)£½SO₃(g)  ¦¤H₂£½£­99 kJ/mol      ¢Ú
¸ù¾Ý¸Ç˹¶¨ÂÉ¿ÉÖª¢Ù¡Á3+¢Ú¡Á3µÃ 3S (s)+ O₂ (g)£½3SO₃(g)
ËùÒԸ÷´Ó¦µÄ·´Ó¦ÈȦ¤H£½(¦¤H₁+¦¤H₂)¡Á3£½£­1185 kJ/mol
µãÆÀ£º¸ÃÌâÊÇÖеÈÄѶȵÄÊÔÌ⣬ÊÔÌâÌù½ü¸ß¿¼£¬»ù´¡ÐÔÇ¿¡£²àÖضÔѧÉú»ù´¡ÖªÊ¶µÄ¹®¹ÌºÍѵÁ·£¬Ö¼ÔÚÅàÑøѧÉúÁé»îÔËÓûù´¡ÖªÊ¶½â¾öʵ¼ÊÎÊÌâµÄÄÜÁ¦¡£¸ÃÌâµÄ¹Ø¼üÊÇÃ÷È·Ó°Ïì·´Ó¦ÈÈ´óСµÄÒòËØ£¬ÒÔ¼°¼ÆËãÒÀ¾Ý£¬ÈçºÎ½áºÏͼÏñÁé»îÔËÓü´¿É¡£