ÌâÄ¿ÄÚÈÝ
£¨2013?¶«³ÇÇø¶þÄ££©Ä³ÐËȤС×éµÄͬѧ¶ÔʳƷÖк¬ÓеÄάÉúËØC£¨»¯Ñ§Ê½ÎªC6H8O6£¬¿É±íʾΪVc£©½øÐÐ̽¾¿£®
£¨1£©Ïòº¬ÓÐVcµÄÈÜÒºÖеμÓ×ÏɫʯÈÈÜÒº±äºì£¬ËµÃ÷Vc¾ßÓеÄÐÔÖÊÊÇ
£¨2£©Ê³Æ·ÖеÄVc±»ÑõÆøÑõ»¯Ê±£¬Æ京Á¿µÄ±ä»¯ÈçͼËùʾ£¬Óɴ˿ɵóöµÄ½áÂÛÓÐ
£¨3£©Ð¡½Ü¶Ôij¹ûÖÒûÁÏÖÐVcµÄº¬Á¿½øÐвⶨ£®·´Ó¦ÔÀíΪC6H8O6+I2=C6H6O6+2HI£¬ÆäÖеâÔªËØÔÚ·´Ó¦ÖÐµÄ »¯ºÏ¼Û±ä»¯ÊÇ
£¨1£©Ïòº¬ÓÐVcµÄÈÜÒºÖеμÓ×ÏɫʯÈÈÜÒº±äºì£¬ËµÃ÷Vc¾ßÓеÄÐÔÖÊÊÇ
ÏÔËáÐÔ
ÏÔËáÐÔ
£®£¨2£©Ê³Æ·ÖеÄVc±»ÑõÆøÑõ»¯Ê±£¬Æ京Á¿µÄ±ä»¯ÈçͼËùʾ£¬Óɴ˿ɵóöµÄ½áÂÛÓÐ
ζÈÔ½¸ß£¬Vc±»Ñõ»¯µÄËÙÂÊÔ½¿ì£»ÏàͬζÈʱ£¬·ÅÖÃʱ¼äÔ½³¤£¬Vcº¬Á¿Ô½µÍ
ζÈÔ½¸ß£¬Vc±»Ñõ»¯µÄËÙÂÊÔ½¿ì£»ÏàͬζÈʱ£¬·ÅÖÃʱ¼äÔ½³¤£¬Vcº¬Á¿Ô½µÍ
£®£¨3£©Ð¡½Ü¶Ôij¹ûÖÒûÁÏÖÐVcµÄº¬Á¿½øÐвⶨ£®·´Ó¦ÔÀíΪC6H8O6+I2=C6H6O6+2HI£¬ÆäÖеâÔªËØÔÚ·´Ó¦ÖÐµÄ »¯ºÏ¼Û±ä»¯ÊÇ
´Ó0µ½-1
´Ó0µ½-1
£®ÊµÑéʱȡ¹ûÖÒûÁÏ10mL£¬ÓÃÖó ·Ð²¢ÀäÈ´µÄÕôÁóˮϡÊÍÖÁ50mL£¬ÏòÆäÖÐÖðµÎ¼ÓÈëÏ¡µâË®ÖÁÇ¡ºÃÍêÈ«·´Ó¦£¬²âµÃÏûºÄµâ£¨I2£©µÄÖÊÁ¿Îª25.4mg£®Ôòÿ100mL¸Ã¹ûÖÒûÁÏÖк¬VcµÄÖÊÁ¿ÊÇ176mg
176mg
£®·ÖÎö£ºÏÔËáÐÔµÄÈÜÒºÄÜʹʯÈïÊÔÒº±äºìÉ«£»½áºÏͼÖÐÐÅÏ¢¿ÉÒÔ½øÐÐÏà¹Ø·½ÃæµÄÅжϣ»¸ù¾Ý»¯Ñ§·½³Ìʽ¿ÉÒÔ¼ÆËãάÉúËØCµÄº¬Á¿£®
½â´ð£º½â£º£¨1£©Ïòº¬ÓÐVcµÄÈÜÒºÖеμÓ×ÏɫʯÈÈÜÒº±äºì£¬ËµÃ÷άÉúËØCÈÜÒºÏÔËáÐÔ£®
¹ÊÌÏÔËáÐÔ£®
£¨2£©ÓÉͼÖÐÐÅÏ¢¿ÉÖª£¬Î¶ÈÔ½¸ß£¬Vc±»Ñõ»¯µÄËÙÂÊÔ½¿ì£»ÏàͬζÈʱ£¬·ÅÖÃʱ¼äÔ½³¤£¬Vcº¬Á¿Ô½µÍ£®
¹ÊÌζÈÔ½¸ß£¬Vc±»Ñõ»¯µÄËÙÂÊÔ½¿ì£»ÏàͬζÈʱ£¬·ÅÖÃʱ¼äÔ½³¤£¬Vcº¬Á¿Ô½µÍ£®
£¨3£©ÔÚµ¥ÖʵâÖУ¬µâÔªËصĻ¯ºÏ¼ÛÊÇ0£¬Ôڵ⻯ÇâÖУ¬ÇâÔªËصĻ¯ºÏ¼ÛÊÇ+1£¬¸ù¾Ý»¯ºÏÎïÖÐÔªËØ»¯ºÏ¼Û´úÊýºÍΪÁ㣬¿ÉÒÔÇó³öµâÔªËصĻ¯ºÏ¼ÛÊÇ-1£®
¹ÊÌ´Ó0µ½-1£®
½â£º10mL¹ûÖÒûÁÏÏûºÄµâ£¨I2£©µÄÖÊÁ¿Îª25.4mg£¬Ôò100mL¹ûÖÒûÁÏÏûºÄµâ£¨I2£©µÄÖÊÁ¿Îª254mg£¬
Éèÿ100mL¸Ã¹ûÖÒûÁÏÖк¬VcµÄÖÊÁ¿ÎªX£¬
C6H8O6 +I2¨TC6H6O6 +2HI
176 254
X 254mg
¨T
X=176mg£®
¹ÊÌ176 mg£®
¹ÊÌÏÔËáÐÔ£®
£¨2£©ÓÉͼÖÐÐÅÏ¢¿ÉÖª£¬Î¶ÈÔ½¸ß£¬Vc±»Ñõ»¯µÄËÙÂÊÔ½¿ì£»ÏàͬζÈʱ£¬·ÅÖÃʱ¼äÔ½³¤£¬Vcº¬Á¿Ô½µÍ£®
¹ÊÌζÈÔ½¸ß£¬Vc±»Ñõ»¯µÄËÙÂÊÔ½¿ì£»ÏàͬζÈʱ£¬·ÅÖÃʱ¼äÔ½³¤£¬Vcº¬Á¿Ô½µÍ£®
£¨3£©ÔÚµ¥ÖʵâÖУ¬µâÔªËصĻ¯ºÏ¼ÛÊÇ0£¬Ôڵ⻯ÇâÖУ¬ÇâÔªËصĻ¯ºÏ¼ÛÊÇ+1£¬¸ù¾Ý»¯ºÏÎïÖÐÔªËØ»¯ºÏ¼Û´úÊýºÍΪÁ㣬¿ÉÒÔÇó³öµâÔªËصĻ¯ºÏ¼ÛÊÇ-1£®
¹ÊÌ´Ó0µ½-1£®
½â£º10mL¹ûÖÒûÁÏÏûºÄµâ£¨I2£©µÄÖÊÁ¿Îª25.4mg£¬Ôò100mL¹ûÖÒûÁÏÏûºÄµâ£¨I2£©µÄÖÊÁ¿Îª254mg£¬
Éèÿ100mL¸Ã¹ûÖÒûÁÏÖк¬VcµÄÖÊÁ¿ÎªX£¬
C6H8O6 +I2¨TC6H6O6 +2HI
176 254
X 254mg
176 |
254 |
X |
254mg |
X=176mg£®
¹ÊÌ176 mg£®
µãÆÀ£º±¾Ì⿼²éÊÓͼ¡¢¼ÆËãµÈ·½ÃæµÄ֪ʶ£¬¸ù¾Ý»¯Ñ§·½³Ìʽ¼ÆËãʱ£¬Ò»¶¨Òª×¢Òâ²½ÖèµÄ¹æ·¶ÐÔ£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿