ÌâÄ¿ÄÚÈÝ
ÓÐÒ»»·±£Æû³µ£¬ÊÇÒÔÇâÆø×÷ȼÁϵģ¬Çë°´ÌâÄ¿ÒªÇó×÷´ð£º
£¨1£©ÇâÆøÔÚ·¢¶¯»úÄÚȼÉÕ¹ý³ÌÖУ¬Éú³ÉÎïÖ»ÓÐË®ÕôÆø£¬²»»áʹ¿ÕÆøÖеÄ______º¬Á¿Æ«¸ß£¬Òò¶øÄܼõ»ºÎÂÊÒЧӦÏÖÏóµÄ·¢Éú£®
£¨2£©Èç¹û2gÇâÆøȼÉÕºóÉú³ÉË®ÕôÆø²¢·Å³ö241.8kJµÄÈÈÁ¿£¬Ð´³öÇâÆøȼÉÕµÄÈÈ»¯Ñ§·½³Ìʽ£º______
£¨3£©ÒÑÖª£ºH2O£¨1£©=H2O£¨g£©£»¡÷H=+44.0kJ/mol£¬Ôòȼ0.8gµÄÇâÆøÉú³ÉҺ̬ˮ·Å³öµÄÄÜÁ¿Îª______KJ£®
£¨1£©ÇâÆøÔÚ·¢¶¯»úÄÚȼÉÕ¹ý³ÌÖУ¬Éú³ÉÎïÖ»ÓÐË®ÕôÆø£¬²»»áʹ¿ÕÆøÖеÄ______º¬Á¿Æ«¸ß£¬Òò¶øÄܼõ»ºÎÂÊÒЧӦÏÖÏóµÄ·¢Éú£®
£¨2£©Èç¹û2gÇâÆøȼÉÕºóÉú³ÉË®ÕôÆø²¢·Å³ö241.8kJµÄÈÈÁ¿£¬Ð´³öÇâÆøȼÉÕµÄÈÈ»¯Ñ§·½³Ìʽ£º______
£¨3£©ÒÑÖª£ºH2O£¨1£©=H2O£¨g£©£»¡÷H=+44.0kJ/mol£¬Ôòȼ0.8gµÄÇâÆøÉú³ÉҺ̬ˮ·Å³öµÄÄÜÁ¿Îª______KJ£®
£¨1£©²úÉúÎÂÊÒЧӦµÄÆøÌåÊÇCO2£¬¹Ê´ð°¸Îª£ºCO2
£¨2£©ÇâÆø¡¢ÑõÆø¡¢Ë®ÕôÆøµÄ״̬¶¼ÊÇÆø̬£¬È¼ÉÕºó·Å³öÄÜÁ¿£¬ËùÒÔ¡÷H£¼0£»2gÇâÆøµÄÎïÖʵÄÁ¿ÊÇ1mol£¬1molÇâÆøȼÉÕºó·Å³ö241.8kJµÄÈÈÁ¿£¬2molÇâÆøȼÉÕºó·Å³ö483.6 kJµÄÄÜÁ¿£¬
¹Ê´ð°¸Îª£º2H2£¨g£©+O2£¨g£©¨T2H2O£¨g£©£»¡÷H=-483.6 kJ/mol
£¨3£©2H2£¨g£©+O2£¨g£©¨T2H2O£¨g£©£»¡÷H=-483.6 kJ/mol ¢Ù
H2O£¨1£©=H2O£¨g£©£»¡÷H=+44.0kJ/mol ¢Ú
¢Ù-¢Ú¡Á2µÃ·½³Ìʽ£º2H2£¨g£©+O2£¨g£©¨T2H2O£¨1£©£»¡÷H=-571.6kJ/mol
ÉèȼÉÕ0.8gµÄÇâÆøÉú³ÉҺ̬ˮ·Å³öµÄÄÜÁ¿ÎªxkJ
2H2£¨g£©+O2£¨g£©¨T2H2O£¨1£©£»¡÷H=-571.6kJ/mol
4g 571.6kJ
0.8g xkJ
x=114.32
¹Ê´ð°¸Îª£º114.32KJ£®
£¨2£©ÇâÆø¡¢ÑõÆø¡¢Ë®ÕôÆøµÄ״̬¶¼ÊÇÆø̬£¬È¼ÉÕºó·Å³öÄÜÁ¿£¬ËùÒÔ¡÷H£¼0£»2gÇâÆøµÄÎïÖʵÄÁ¿ÊÇ1mol£¬1molÇâÆøȼÉÕºó·Å³ö241.8kJµÄÈÈÁ¿£¬2molÇâÆøȼÉÕºó·Å³ö483.6 kJµÄÄÜÁ¿£¬
¹Ê´ð°¸Îª£º2H2£¨g£©+O2£¨g£©¨T2H2O£¨g£©£»¡÷H=-483.6 kJ/mol
£¨3£©2H2£¨g£©+O2£¨g£©¨T2H2O£¨g£©£»¡÷H=-483.6 kJ/mol ¢Ù
H2O£¨1£©=H2O£¨g£©£»¡÷H=+44.0kJ/mol ¢Ú
¢Ù-¢Ú¡Á2µÃ·½³Ìʽ£º2H2£¨g£©+O2£¨g£©¨T2H2O£¨1£©£»¡÷H=-571.6kJ/mol
ÉèȼÉÕ0.8gµÄÇâÆøÉú³ÉҺ̬ˮ·Å³öµÄÄÜÁ¿ÎªxkJ
2H2£¨g£©+O2£¨g£©¨T2H2O£¨1£©£»¡÷H=-571.6kJ/mol
4g 571.6kJ
0.8g xkJ
x=114.32
¹Ê´ð°¸Îª£º114.32KJ£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿
ÉϺ£×÷Ϊ2010ÄêÊÀ²©»áµÄ¾Ù°ì³ÇÊУ¬¹«¹²½»Í¨µÄ¡°ÂÌÉ«¡±Ò²ÒѾÔÚ½øÐС£¶þ¼×ÃÑ(CH3OCH3)±»³ÆΪ21ÊÀ¼ÍµÄÐÂÐÍȼÁÏ£¬Çå½à¡¢¸ßЧ£¬ÓÐÓÅÁ¼µÄ»·±£ÐÔÄÜ£¬ÒÔ¶þ¼×ÃÑ¡¢¿ÕÆø¡¢ÇâÑõ»¯¼ØÈÜҺΪÔÁÏ£¬Ê¯Ä«Îªµç¼«¿É¹¹³ÉȼÁϵç³Ø¡£ÓйØ˵·¨ÕýÈ·µÄÊÇ
A£®¶þ¼×ÃÑÓëÒÒ´¼ÊÇͬ·ÖÒì¹¹Ìå |
B£®¸ÃȼÁϵç³ØÖÐͨÈë¶þ¼×ÃѵÄÒ»¼«ÎªÕý¼« |
C£®¶þ¼×ÃÑ×÷ΪÆû³µÈ¼Áϲ»»á²úÉúµªµÄÑõ»¯ÎïºÍ̼Ç⻯ºÏÎïµÄÎÛȾ |
D£®ÔÚȼÁϵç³ØÖжþ¼×ÃÑ×îÖÕת»¯ÎªCO2ºÍH2O |