Question

ÒÑÖª£ºH₂O£¨g£©¨TH₂O£¨l£©¡÷H₁=Q ₁ kJ/mol¢Ù
C₂H₅OH£¨g£©¨TC₂H₅OH£¨l£©¡÷H₂=Q ₂ kJ/mol¢Ú
C₂H₅OH£¨g£©+3O₂£¨g£©¨T2CO₂£¨g£©+3H₂O£¨g£©¡÷H₃=Q ₃ kJ/mol¢Û
Èôʹ1molÒÒ´¼ÒºÌåÍêȫȼÉÕ£¬×îºó»Ö¸´µ½ÊÒΣ¬Ôò·Å³öµÄÈÈÁ¿Îª£¨¡¡¡¡£©

A£®Q ₁-3Q ₂+Q ₃

B£®3Q ₁-Q ₂+Q ₃

C£®Q ₁+Q ₂+Q ₃

D£®2£¨Q ₁+Q ₂+Q ₃£©

Answer 1

·ÖÎö£ºÀûÓÃÒÑÖªµÄ·´Ó¦µÃ³öC₂H₅OH£¨l£©+3O₂£¨g£©¨T2CO₂£¨g£©+3H₂O£¨l£©µÄ·´Ó¦ÈÈ£¬ÀûÓÃÎïÖʵÄÁ¿Óë·´Ó¦·Å³öµÄÈÈÁ¿³ÉÕý±ÈÀ´½â´ð£®

½â´ð£º½â£º¢ÙH₂O£¨g£©¨TH₂O£¨l£©¡÷H₁=-Q₁kJ?mol^-1£¨Q₁£¾0£©£¬
¢ÚC₂H₅OH£¨g£©¨TC₂H₅OH£¨l£©¡÷H₂=Q₂kJ?mol^-1£¨Q₂£¼0£©£¬
¢ÛC₂H₅OH£¨g£©+3O₂£¨g£©¨T2CO₂£¨g£©+3H₂O£¨g£©¡÷H₃=-Q₃kJ?mol^-1£¨Q₃£¾0£©£¬
¸ù¾Ý¸Ç˹¶¨ÂÉ¿ÉÖª£¬¢Ù¡Á3-¢Ú+¢ÛµÃC₂H₅OH£¨l£©+3O₂£¨g£©¨T2CO₂£¨g£©+3H₂O£¨l£©¡÷H=£¨-3Q₁+Q₂-Q₃£©kJ/mol£¬
¼´1molҺ̬ÒÒ´¼ÍêȫȼÉÕ²¢»Ö¸´ÖÁÊÒΣ¬Ôò·Å³öµÄÈÈÁ¿Îª£¨3Q₁-Q₂+Q₃£©kJ£¬
¹ÊÑ¡B£®

µãÆÀ£º±¾Ì⿼²éѧÉúÀûÓøÇ˹¶¨ÂɼÆËã·´Ó¦ÈÈ£¬Ã÷È·ÒÑÖª·´Ó¦ºÍÄ¿±ê·´Ó¦µÄ¹ØϵÊǽâ´ð±¾ÌâµÄ¹Ø¼ü£¬ÌâÄ¿ÄѶÈÖеȣ®