ÌâÄ¿ÄÚÈÝ
£¨Ò»£©Ê¢·ÅŨÁòËáµÄÊÔ¼ÁÆ¿±êÇ©ÉÏÓ¦Ó¡ÓÐÏÂÁо¯Ê¾±ê¼ÇÖеÄ
£¨¶þ£©ÈçͼÊÇÁòËáÊÔ¼ÁÆ¿±êÇ©ÉϵIJ¿·ÖÄÚÈÝ£®
ÏÖʵÑéÊÒÐèÒª240ml 0.46mol/LµÄÏ¡ÁòËáÓøÃÁòËáÅäÖã¬Ôò£º
£¨1£©ÐèÒª¸ÃŨÁòËáµÄÌå»ýΪ
£¨2£©¿É¹©Ñ¡ÓõÄÒÇÆ÷ÓУº½ºÍ·µÎ¹Ü£»ÉÕÆ¿£»ÉÕ±£»Ò©³×£»Á¿Í²£»ÍÐÅÌÌìƽ£®ÅäÖÃÏ¡ÁòËáʱ£¬»¹È±ÉÙµÄÒÇÆ÷ÓÐ
£¨3£©ÅäÖùý³ÌÖÐÓм¸¸ö¹Ø¼üµÄ²½ÖèºÍ²Ù×÷ÈçͼËùʾ£º½«ÏÂÁÐʵÑé²½ÖèA-F°´ÊµÑé¹ý³ÌÏȺó´ÎÐòÅÅÁÐ
£¨4£©¸Ãͬѧʵ¼ÊÅäÖõõ½µÄŨ¶ÈΪ0.45mol/L£¬¿ÉÄܵÄÔÒòÊÇ
A¡¢Á¿È¡Å¨H2SO4ʱ¸©Êӿ̶È
B¡¢ÈÝÁ¿Æ¿Ï´¾»ºóδ¾¸ÉÔï´¦Àí
C¡¢½«Ï¡ÊͺóµÄÏ¡ÁòËáÁ¢¼´×ªÈëÈÝÁ¿Æ¿ºó£¬½ô½ÓמͽøÐÐÒÔºóµÄʵÑé²Ù×÷
D¡¢¶¨ÈÝʱÑöÊӿ̶ÈÏߣ®
D
D
£®£¨¶þ£©ÈçͼÊÇÁòËáÊÔ¼ÁÆ¿±êÇ©ÉϵIJ¿·ÖÄÚÈÝ£®
ÏÖʵÑéÊÒÐèÒª240ml 0.46mol/LµÄÏ¡ÁòËáÓøÃÁòËáÅäÖã¬Ôò£º
£¨1£©ÐèÒª¸ÃŨÁòËáµÄÌå»ýΪ
6.3
6.3
mL£»£¨2£©¿É¹©Ñ¡ÓõÄÒÇÆ÷ÓУº½ºÍ·µÎ¹Ü£»ÉÕÆ¿£»ÉÕ±£»Ò©³×£»Á¿Í²£»ÍÐÅÌÌìƽ£®ÅäÖÃÏ¡ÁòËáʱ£¬»¹È±ÉÙµÄÒÇÆ÷ÓÐ
²£Á§°ô
²£Á§°ô
¡¢250mLÈÝÁ¿Æ¿
250mLÈÝÁ¿Æ¿
£¨3£©ÅäÖùý³ÌÖÐÓм¸¸ö¹Ø¼üµÄ²½ÖèºÍ²Ù×÷ÈçͼËùʾ£º½«ÏÂÁÐʵÑé²½ÖèA-F°´ÊµÑé¹ý³ÌÏȺó´ÎÐòÅÅÁÐ
CBDFAE
CBDFAE
£®£¨4£©¸Ãͬѧʵ¼ÊÅäÖõõ½µÄŨ¶ÈΪ0.45mol/L£¬¿ÉÄܵÄÔÒòÊÇ
AD
AD
£®A¡¢Á¿È¡Å¨H2SO4ʱ¸©Êӿ̶È
B¡¢ÈÝÁ¿Æ¿Ï´¾»ºóδ¾¸ÉÔï´¦Àí
C¡¢½«Ï¡ÊͺóµÄÏ¡ÁòËáÁ¢¼´×ªÈëÈÝÁ¿Æ¿ºó£¬½ô½ÓמͽøÐÐÒÔºóµÄʵÑé²Ù×÷
D¡¢¶¨ÈÝʱÑöÊӿ̶ÈÏߣ®
·ÖÎö£º£¨Ò»£©¸ù¾ÝŨÁòËáÊôÓÚ¸¯Ê´ÐÔµÄÒ©Æ·½øÐÐÅжϣ»
£¨¶þ£©£¨1£©ÐèÒª240ml 0.46mol/LµÄÏ¡ÁòËᣬʵ¼ÊÅäÖÆʱÐèÒªÅäÖÆ250mlÏ¡ÁòËáÈÜÒº£»
£¨2£©¸ù¾ÝÅäÖÆÒ»¶¨ÎïÖʵÄÁ¿Å¨¶ÈµÄÈÜÒºµÄÅäÖƲ½ÖèÑ¡ÔñÒÇÆ÷£»
£¨3£©¸ù¾ÝÅäÖÆÒ»¶¨ÎïÖʵÄÁ¿Å¨¶ÈµÄÈÜÒºµÄ²½Öè½øÐÐÅÅÐò£»
£¨4£©ÅäÖƵÄŨ¶ÈƫС£¬¸ù¾Ý²Ù×÷¶Ôc=
µÄÓ°Ïì½øÐÐÅжϣ®
£¨¶þ£©£¨1£©ÐèÒª240ml 0.46mol/LµÄÏ¡ÁòËᣬʵ¼ÊÅäÖÆʱÐèÒªÅäÖÆ250mlÏ¡ÁòËáÈÜÒº£»
£¨2£©¸ù¾ÝÅäÖÆÒ»¶¨ÎïÖʵÄÁ¿Å¨¶ÈµÄÈÜÒºµÄÅäÖƲ½ÖèÑ¡ÔñÒÇÆ÷£»
£¨3£©¸ù¾ÝÅäÖÆÒ»¶¨ÎïÖʵÄÁ¿Å¨¶ÈµÄÈÜÒºµÄ²½Öè½øÐÐÅÅÐò£»
£¨4£©ÅäÖƵÄŨ¶ÈƫС£¬¸ù¾Ý²Ù×÷¶Ôc=
n |
V |
½â´ð£º½â£º£¨Ò»£©Å¨ÁòËá¾ßÓкÜÇ¿µÄ¸¯Ê´ÐÔ£¬Ê¢·ÅŨÁòËáµÄÊÔ¼ÁÆ¿±êÇ©ÉÏÓ¦Ó¡ÓоßÓи¯Ê´ÐԵıêÖ¾£¬ËùÒÔDÕýÈ·£¬
¹Ê´ð°¸Îª£ºD£»
£¨¶þ £©£¨1£©¸ÃŨÁòËáÖк¬ÓеÄÁòËáµÄÎïÖʵÄÁ¿Å¨¶ÈΪ£º
=18.4mol/L£¬ÑéÊÒÐèÒª240ml 0.46mol/LµÄÏ¡ÁòËᣬʵ¼ÊÅäÖÆʱÐèÒªÅäÖÆ250mLµÄÏ¡ÁòËᣬ
ÐèÒªÁòËáµÄÎïÖʵÄÁ¿Îª£º0.46mol/L¡Á0.25L=0.115mol£¬ÐèҪŨÁòËáÌå»ýΪ£º
=0.00625L=6.25mL£¬ÓÉÓÚÁ¿Í²Ö»ÄÜ׼ȷµ½0.1mL£¬ËùÒÔÓÃÁ¿Í²Á¿È¡µÄŨÁòËáÌå»ýΪ6.3mL£¬
¹Ê´ð°¸Îª£º6.3£»
£¨2£©ÅäÖÆÒ»¶¨ÎïÖʵÄÁ¿Å¨¶ÈµÄÈÜÒºµÄ²½ÖèΪ£º¼ÆËã¡¢Á¿È¡¡¢Ï¡ÊÍ¡¢ÀäÈ´¡¢×ªÒÆ¡¢Ï´µÓ¡¢¶¨Èݵȣ¬ÐèÒªµÄÒÇÆ÷ÓУºÁ¿Í²¡¢ÉÕ±¡¢½ºÍ·µÎ¹Ü¡¢²£Á§°ô¡¢250mLÈÝÁ¿Æ¿£¬ËùÒÔ»¹ÐèÒª²£Á§°ôºÍ250mLÈÝÁ¿Æ¿£¬
¹Ê´ð°¸Îª£º²£Á§°ô£»250mlµÄÈÝÁ¿Æ¿£»
£¨3£©ÅäÖÆÒ»¶¨ÎïÖʵÄÁ¿Å¨¶ÈµÄÈÜÒºµÄ²½ÖèÓУº¼ÆËã¡¢Á¿È¡¡¢Ï¡ÊÍ¡¢ÀäÈ´¡¢×ªÒÆ¡¢Ï´µÓ¡¢¶¨ÈÝ¡¢Ò¡ÔÈ£¬ËùÒÔÕýȷ˳ÐòΪ£ºCBDFAE£¬
¹Ê´ð°¸Îª£ºCBDFAE£»
£¨4£©¸Ãͬѧʵ¼ÊÅäÖõõ½µÄŨ¶ÈΪ0.45mol/L£¬ËµÃ÷ÅäÖƵÄÈÜÒºµÄŨ¶ÈÆ«µÍ£¬
A¡¢Á¿È¡Å¨H2SO4ʱ¸©Êӿ̶ȣ¬µ¼ÖÂÁ¿È¡µÄŨÁòËáµÄÌå»ýƫС£¬ÈÜÖÊÁòËáµÄÎïÖʵÄÁ¿Å¨¶ÈÆ«µÍ£¬¹ÊAÕýÈ·£»
B¡¢ÈÝÁ¿Æ¿Ï´¾»ºóδ¾¸ÉÔï´¦Àí£¬¶ÔÅäÖƽá¹û²»»á²úÉúÓ°Ï죬¹ÊB´íÎó£»
C¡¢½«Ï¡ÊͺóµÄÏ¡ÁòËáÁ¢¼´×ªÈëÈÝÁ¿Æ¿ºó£¬½ô½ÓמͽøÐÐÒÔºóµÄʵÑé²Ù×÷£¬Ã»ÓÐÀäÈ´£¬µ¼ÖÂÀäÈ´ºóÅäÖƵÄÈÜÒºµÄÌå»ýƫС£¬ÈÜÒºµÄŨ¶ÈÆ«´ó£¬¹ÊC´íÎó£»
D¡¢¶¨ÈÝʱÑöÊӿ̶ÈÏߣ¬µ¼ÖÂÅäÖƵÄÈÜÒºµÄÌå»ýÆ«´ó£¬¸ù¾Ýc=
£¬µ¼ÖÂÅäÖƵÄÈÜÒºµÄŨ¶ÈƫС£¬¹ÊDÕýÈ·£»
¹Ê´ð°¸Îª£ºAD£®
¹Ê´ð°¸Îª£ºD£»
£¨¶þ £©£¨1£©¸ÃŨÁòËáÖк¬ÓеÄÁòËáµÄÎïÖʵÄÁ¿Å¨¶ÈΪ£º
| ||
1L |
ÐèÒªÁòËáµÄÎïÖʵÄÁ¿Îª£º0.46mol/L¡Á0.25L=0.115mol£¬ÐèҪŨÁòËáÌå»ýΪ£º
0.115mol |
18.4mol/L |
¹Ê´ð°¸Îª£º6.3£»
£¨2£©ÅäÖÆÒ»¶¨ÎïÖʵÄÁ¿Å¨¶ÈµÄÈÜÒºµÄ²½ÖèΪ£º¼ÆËã¡¢Á¿È¡¡¢Ï¡ÊÍ¡¢ÀäÈ´¡¢×ªÒÆ¡¢Ï´µÓ¡¢¶¨Èݵȣ¬ÐèÒªµÄÒÇÆ÷ÓУºÁ¿Í²¡¢ÉÕ±¡¢½ºÍ·µÎ¹Ü¡¢²£Á§°ô¡¢250mLÈÝÁ¿Æ¿£¬ËùÒÔ»¹ÐèÒª²£Á§°ôºÍ250mLÈÝÁ¿Æ¿£¬
¹Ê´ð°¸Îª£º²£Á§°ô£»250mlµÄÈÝÁ¿Æ¿£»
£¨3£©ÅäÖÆÒ»¶¨ÎïÖʵÄÁ¿Å¨¶ÈµÄÈÜÒºµÄ²½ÖèÓУº¼ÆËã¡¢Á¿È¡¡¢Ï¡ÊÍ¡¢ÀäÈ´¡¢×ªÒÆ¡¢Ï´µÓ¡¢¶¨ÈÝ¡¢Ò¡ÔÈ£¬ËùÒÔÕýȷ˳ÐòΪ£ºCBDFAE£¬
¹Ê´ð°¸Îª£ºCBDFAE£»
£¨4£©¸Ãͬѧʵ¼ÊÅäÖõõ½µÄŨ¶ÈΪ0.45mol/L£¬ËµÃ÷ÅäÖƵÄÈÜÒºµÄŨ¶ÈÆ«µÍ£¬
A¡¢Á¿È¡Å¨H2SO4ʱ¸©Êӿ̶ȣ¬µ¼ÖÂÁ¿È¡µÄŨÁòËáµÄÌå»ýƫС£¬ÈÜÖÊÁòËáµÄÎïÖʵÄÁ¿Å¨¶ÈÆ«µÍ£¬¹ÊAÕýÈ·£»
B¡¢ÈÝÁ¿Æ¿Ï´¾»ºóδ¾¸ÉÔï´¦Àí£¬¶ÔÅäÖƽá¹û²»»á²úÉúÓ°Ï죬¹ÊB´íÎó£»
C¡¢½«Ï¡ÊͺóµÄÏ¡ÁòËáÁ¢¼´×ªÈëÈÝÁ¿Æ¿ºó£¬½ô½ÓמͽøÐÐÒÔºóµÄʵÑé²Ù×÷£¬Ã»ÓÐÀäÈ´£¬µ¼ÖÂÀäÈ´ºóÅäÖƵÄÈÜÒºµÄÌå»ýƫС£¬ÈÜÒºµÄŨ¶ÈÆ«´ó£¬¹ÊC´íÎó£»
D¡¢¶¨ÈÝʱÑöÊӿ̶ÈÏߣ¬µ¼ÖÂÅäÖƵÄÈÜÒºµÄÌå»ýÆ«´ó£¬¸ù¾Ýc=
n |
V |
¹Ê´ð°¸Îª£ºAD£®
µãÆÀ£º±¾Ì⿼²éÁËÅäÖÆÒ»¶¨ÎïÖʵÄÁ¿Å¨¶ÈµÄÈÜÒºµÄ·½·¨¼°Îó²î·ÖÎö£¬Éæ¼°ÁËÅäÖÆÈÜҺʱÒÇÆ÷µÄÑ¡Ôñ¡¢ÎïÖʵÄÁ¿ÄѶȵļÆËã¼°Îó²î·ÖÎö£¬¿ÉÒÔ¸ù¾ÝËùѧ֪ʶÍê³É£¬±¾ÌâÄѶȲ»´ó£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿