ij¼îÐÔÈÜÒºÖÐÖ»ÓÐNa£«¡¢CH3COO£­¡¢H£«¡¢OH£­ËÄÖÖÀë×Ó¡£ÔòÏÂÁÐÃèÊöÕýÈ·µÄÊÇ(    )

A£®pH£½11µÄNaOHÈÜÒºÓëpH£½3µÄ´×ËáÈÜÒºµÈÌå»ý»ìºÏ£¬µÎÈëʯÈïÈÜÒº³ÊÀ¶É«

B£®¸ÃÈÜÒºÓɵÈÎïÖʵÄÁ¿Å¨¶È¡¢µÈÌå»ýµÄNaOHÈÜÒººÍCH3COOHÈÜÒº»ìºÏ¶ø³É

C£®ÔÚNaOHÈÜÒºÖмÓÈëÒ»¶¨Á¿µÄCH3COOHÈÜÒº£¬Ö»Óе±ÈÜÒºÖÐÀë×ÓŨ¶ÈÂú×㣺

c(Na£«)£¾c(CH3COO£­)£¾c(OH£­)£¾c(H£«)ʱ£¬²Å·ûºÏÌâÒâ¡£

D£®¼ÓÈëÊÊÁ¿°±Ë®£¬c(CH3COO£­)Ò»¶¨´óÓÚc(Na£«)¡¢c(NH4£«)Ö®ºÍ

B


½âÎö:

Ê×ÏÈҪǿµ÷Òþº¬Ìõ¼þ¡°¼îÐÔ¡±£¬µÃ³ö£ºc(OH£­)£¾c(H£«)£¬ÔÙ¸ù¾ÝµçºÉÊغãÍƳö(Na£«)£¾c(CH3COO£­)¡£

AÏîÇ¡ºÃÂú×ãn(OH£­)=n(H£«),¼´ËáºÍ¼îÒѵçÀë³öÀ´µÄ¡¢H£«¡¢OH£­Ç¡ºÃÍêÈ«Öкͣ¬µ«ÊÇÓÉÓÚ´×ËáÊÇÈõËᣬ´óÁ¿µÄδµçÀ룬¼´´óÁ¿Ê£Ó࣬¹Ê»ìºÏºóÈÜÒº³ÊËáÐÔ¡£

BÏîÊǵÈÎïÖʵÄÁ¿Å¨¶È¡¢µÈÌå»ýµÄNaOHÈÜÒººÍCH3COOHÈÜÒº»ìºÏ£¬ÔòÇ¡ºÃÖкÍת»¯³ÉΪCH3COONaÈÜÒº£¬ÊôÓÚÇ¿¼îÈõËáÑÎÈÜÒº£¬¹Ê³Ê¼îÐÔ£¬ºÏºõÌâÒâ¡£

CÏîÖÐc(Na£«)£¾c(CH3COO£­)£¾c(OH£­)£¾c(H£«)ʱ£¬ÊÇÂú×ãÌâÒâµÄΨһÌõ¼þÂð£¿ÕâÊDZ¾ÌâµÄÄѵ㣬ʵ¼ÊÉÏc(Na£«)£¾c(OH£­)£¾c(CH3COO£­)£¾c(H£«)Ò²¿ÉÒÔ£¬Ï൱ÓÚ¼ÓÈëµÄ´×ËáºÜÉÙ¡£

DÏîÊÇÔÚÔ­ÈÜÒºÖмÓÈëÊÊÁ¿°±Ë®£¬ÈÜÒºÈԳʼîÐÔ£¬¸ù¾Ýc(OH£­)£¾c(H£«)¡¢(Na£«)£¾c(CH3COO£­)£¬µÃ³öc(CH3COO£­)Ò»¶¨´óÓÚc(Na£«)¡¢c(NH4£«)Ö®ºÍµÄ˵·¨ÊÇ´íÎóµÄ¡£

Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖл¯Ñ§ À´Ô´£º ÌâÐÍ£º

ijËáÐÔÈÜÒºÖÐÖ»ÓÐNa+¡¢CH3COO-¡¢H+¡¢OH-ËÄÖÖÀë×Ó£®ÔòÏÂÁÐÃèÊöÕýÈ·µÄÊÇ£¨¡¡¡¡£©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖл¯Ñ§ À´Ô´£º ÌâÐÍ£º

ij¼îÐÔÈÜÒºÖÐÖ»ÓÐNa+¡¢CH3COO-¡¢H+¡¢OH-ËÄÖÖÀë×Ó£®ÔòÏÂÁÐÃèÊöÕýÈ·µÄÊÇ£¨¡¡¡¡£©
A¡¢pH=11µÄNaOHÈÜÒºÓëpH=3µÄ´×ËáÈÜÒºµÈÌå»ý»ìºÏ£¬µÎÈëʯÈïÈÜÒº³ÊÀ¶É«B¡¢¸ÃÈÜÒºÓɵÈÎïÖʵÄÁ¿Å¨¶È¡¢µÈÌå»ýµÄNaOHÈÜÒººÍCH3COOHÈÜÒº»ìºÏ¶ø³ÉC¡¢ÔÚNaOHÈÜÒºÖмÓÈëÒ»¶¨Á¿µÄCH3COOHÈÜÒº£¬Ö»Óе±ÈÜÒºÖÐÀë×ÓŨ¶ÈÂú×㣺c£¨Na+£©£¾c£¨CH3COO-£©£¾c£¨OH-£©£¾c£¨H+£©Ê±£¬²Å·ûºÏÌâÒâD¡¢¼ÓÈëÊÊÁ¿°±Ë®£¬c£¨CH3COO-£©Ò»¶¨´óÓÚc£¨Na+£©¡¢c£¨NH4+£©Ö®ºÍ

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖл¯Ñ§ À´Ô´£º2010-2011ѧÄêÕã½­Ê¡ÁùУ¸ßÈý2ÔÂÁª¿¼£¨Àí×Û£©»¯Ñ§²¿·Ö ÌâÐÍ£ºÑ¡ÔñÌâ

ijËáÐÔÈÜÒºÖÐÖ»ÓÐNa+¡¢CH3COO£­¡¢H+¡¢OH£­ËÄÖÖÀë×Ó¡£ÔòÏÂÁÐÃèÊöÕýÈ·µÄÊÇ

A£®¸ÃÈÜÒº¿ÉÓÉpH=3µÄCH3COOHÓëpH=11µÄNaOHÈÜÒºµÈÌå»ý»ìºÏ¶ø³É

B£®¸ÃÈÜÒº¿ÉÓɵÈÎïÖʵÄÁ¿Å¨¶È¡¢µÈÌå»ýµÄNaOHÈÜÒººÍCH3COOHÈÜÒº»ìºÏ¶ø³É

C£®ÈôʹÈÜÒºpH=7£¬¿ÉÏòÈÜÒºÖмÓÈëÊÊÁ¿NaOHÈÜÒº£¬´ËʱÀë×ÓŨ¶È´óС˳ÐòΪ

c(Na+)£¾c(CH3COO£­)£¾c(OH£­)£¾c(H+)

D£®Èô¼ÓÈëÊÊÁ¿°±Ë®ÖÁ¼îÐÔ£¬ÔòÈÜÒºÖÐc(CH3COO£­)Ò»¶¨´óÓÚc(Na+)¡¢c(NH4£«)Ö®ºÍ

 

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖл¯Ñ§ À´Ô´£º ÌâÐÍ£ºµ¥Ñ¡Ìâ

ij¼îÐÔÈÜÒºÖÐÖ»ÓÐNa+¡¢CH3COO-¡¢H+¡¢OH-ËÄÖÖÀë×Ó¡£ÔòÏÂÁÐÃèÊöÕýÈ·µÄÊÇ


  1. A.
    pH£½11µÄNaOHÈÜÒºÓëpH£½3µÄ´×ËáÈÜÒºµÈÌå»ý»ìºÏ£¬µÎÈëʯÈïÈÜÒº³ÊÀ¶É«
  2. B.
    ¸ÃÈÜÒºÓɵÈÎïÖʵÄÁ¿Å¨¶È¡¢µÈÌå»ýµÄNaOHÈÜÒººÍCH3COOHÈÜÒº»ìºÏ¶ø³É
  3. C.
    ÔÚNaOHÈÜÒºÖмÓÈëÒ»¶¨Á¿µÄCH3COOHÈÜÒº£¬Ö»Óе±ÈÜÒºÖÐÀë×ÓŨ¶ÈÂú×㣺c(Na+)£¾c(CH3COO-)£¾c(OH-)£¾c(H+)ʱ£¬²Å·ûºÏÌâÒâ¡£
  4. D.
    ¼ÓÈëÊÊÁ¿°±Ë®£¬c(CH3COO-)Ò»¶¨´óÓÚc(Na+)¡¢c(NH4+)Ö®ºÍ

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸