Question

¡¾ÌâÄ¿¡¿2012Äê6ÔÂ16ÈÕÎÒ¹ú³É¹¦·¢ÉäÁË¡°ÉñÖݾźš±£®Õâ±êÖ¾×ÅÖйúÈ˵ÄÌ«¿Õʱ´úÓÖÇ°½øÁËÒ»´ó²½£®·¢Éä¡°Éñ¾Å¡±Ê±ÓÃ루N2H4£©×÷Ϊ»ð¼ý·¢¶¯»úµÄȼÁÏ£¬NO2ΪÑõ»¯¼Á£¬·´Ó¦Éú³ÉN2ºÍË®ÕôÆø£®ÒÑÖª£º

N2£¨g£©+2O2£¨g£©=2NO2£¨g£©£»¡÷H=+67£®7kJ/mol

N2H4£¨g£©+O2£¨g£©=N2£¨g£©+2H2O£¨g£©£»¡÷H=-534kJ/mol

ÏÂÁйØÓÚëºÍNO2·´Ó¦µÄÈÈ»¯Ñ§·½³ÌʽÖУ¬ÕýÈ·µÄÊÇ£¨ £©

A£®2N2H4£¨g£©+2NO2£¨g£©=3N2£¨g£©+4H2O£¨l£©£»¡÷H=-1135£®7 kJ/mol

B£®2N2H4£¨g£©+2NO2£¨g£©=3N2£¨g£©+4H2O£¨g£©£»¡÷H=-1000£®3 kJ/mol

C£®N2H4£¨g£©+NO2£¨g£©=N2£¨g£©+2H2O£¨l£©£»¡÷H=-1135£®7 kJ/mol

D£®2N2H4£¨g£©+2NO2£¨g£©=3N2£¨g£©+4H2O£¨g£©£»¡÷H=-1135£®7 kJ/mol

Answer 1

¡¾´ð°¸¡¿D

¡¾½âÎö¡¿

ÊÔÌâ·ÖÎö£ºÒÑÖª£º¢ÙN2£¨g£©+2O2£¨g£©¨T2NO2£¨g£©£¬¡÷H=+67£®7KJmol-1£»¢ÚN2H4£¨g£©+O2£¨g£©¨TN2£¨g£©+2H2O £¨g£©£¬¡÷H=-534KJmol-1£»½«·½³Ìʽ2¡Á¢Ú-¢ÙµÃ2N2H4£¨g£©+2NO2£¨g£©=3N2£¨g£©+4H2O£¨g£©¡÷H=2¡Á£¨-534KJmol-1£©-£¨+67£®7KJmol-1£©=-1135£®7kJmol-1£¬¹Ê´ð°¸Îª£º2N2H4£¨g£©+2NO2£¨g£©=3N2£¨g£©+4H2O£¨g£©¡÷H=-1135£®7kJmol-1£¬¹ÊÑ¡D¡£