Znn3bq.jpeg
²é¿´: 889  |  »Ø¸´: 9
µ±Ç°Ö÷ÌâÒѾ­´æµµ¡£
µ±Ç°Ö»ÏÔʾÂú×ãÖ¸¶¨Ìõ¼þµÄ»ØÌû£¬µã»÷ÕâÀï²é¿´±¾»°ÌâµÄËùÓлØÌû

Öйú¹í×Ó

Òø³æ (³õÈëÎÄ̳)

[½»Á÷] ÇóÖú£º°ï³æ³æÇó½âÒ»µÀ¹ØÓÚËá¼îµÎ¶¨µÄÌâ

±û¶þËᣨHOOC-CH2-COOH£©(¼òдΪH2M)        ´æÔÚÏÂÁÐÁ½¸öƽºâ£¬
H2M= HM-+H+   PKa1=2.86
HM-= M2-+H+    PKa2=5.7
ÏÖÈ¡20.00mlº¬±û¶þËá¶þÄÆ£¨Na2M£©ºÍ±û¶þËáÇâÄÆ£¨NaHM£©»ìºÏÎïµÄÈÜÒº£¬ÓÃ0.01mol/lHClµÎ¶¨¹ý³ÌÖвⶨµÎ¶¨ÇúÏßÉϵÄÁ½¸öpHµã£º
¼ÓÈëÑÎËáµÄÌå»ý£¨ml£©   pH
   1.00                      5.70
   10.00                    4.28
ÊÔ¼ÆËãµ½»¯Ñ§¼ÆÁ¿µãʱ£¬×ܹ²ÏûºÄÑÎËáµÄÌå»ýÊÇ˵ÉÙ£¿
»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

wandrea

ÖÁ×ðľ³æ (ÕýʽдÊÖ)

ÊÂʵÉÏ£¬Ìõ¼þ²»Âú×ãÊDz»Äܵζ¨µÄ¡£

ÄÇÏÖÔÚ¸øÁ˵樵ÄpH±ä»¯£¬Ö»ÄÜÊÇÀíÂÛÉÏËãËã¶øÒÑ£¬Êµ¼ÊÊDz»ÄܲÉÓÃÕâÖÖ¹ý³Ì²â¶¨µÄ¡£
ÕæÏëÏò³ö´ËÌâÄ¿µÄÀÏʦÇë½ÌÁË¡£

¼ÆËãµ½»¯Ñ§¼ÆÁ¿µãʱ£¿»¯Ñ§¼ÆÁ¿µãʱ×é³ÉÊÇʲô£¿ÌâĿȷʵÓÐÎÊÌ⣡
9Â¥2009-03-01 23:04:14
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²é¿´È«²¿ 10 ¸ö»Ø´ð

huang1987

ľ³æ (ÖøÃûдÊÖ)

½ðÊôÓлúÖ®ÀÃÂþСÖí

¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï
Öйú¹í×Ó(½ð±Ò+1):лл²ÎÓë
Öйú¹í×Ó(½ð±Ò+7,VIP+0):ллÄãѽ£¡ 2-28 20:20
21ml   ¼ÓÒ»ºÁÉý´ïPH=5.7˵Ã÷¸ÕºÍ¶þËá¶þÄÆ·´Ó¦ÍêÈ«µÃµ½o.o1molµÄÒ»ÄÆ£¬ÔÙºÍÑÎËá·´Ó¦ÐèÔÚ¼Ó20ml,²Å¿É
Óа®²ÅÓÐÏ£Íû£¡
2Â¥2009-02-28 19:57:12
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

±±¶·ÐÇÐÇ

ÖÁ×ðľ³æ (ÖªÃû×÷¼Ò)

ÀϰæÖ÷

¡ï ¡ï ¡ï ¡ï
Öйú¹í×Ó(½ð±Ò+1):лл²ÎÓë
Öйú¹í×Ó(½ð±Ò+3,VIP+0):лл £¡ÎÒÔÚѰÕÒһϴ𰸠3-1 08:34
ºÇºÇ£¬Â¥ÉϼÆËãµÄ²»¶Ô°¡

PH=5.7=PKa2²¢²»ÊDZû¶þËá¶þÄÆ·´Ó¦ÍêÈ«µÃµ½Ò»ÄÆ£¬¶øÊÇHM-= M2-+H+×óÓÒÁ½±ßµÄÁ¿ÏàµÈ£¬¼´¶þ¼Û¸ºÀë×ÓºÍÒ»¼Û¸ºÀë×ÓµÈÁ¿£¬ËùÒÔ¼ÓÈë1mlÖ»ÊÇʹµÚ¶þ¸ö·´Ó¦½øÐе½Ò»°ë£¬ËùÒÔ¹²Ðè22ml
´ó²½Ïòǰ
4Â¥2009-02-28 21:12:01
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

wandrea

ÖÁ×ðľ³æ (ÕýʽдÊÖ)

¡ï ¡ï
Öйú¹í×Ó(½ð±Ò+1):лл²ÎÓë
Öйú¹í×Ó(½ð±Ò+1,VIP+0):Äã˵ÊÇÎÒ¼ûµ½´ËÌâµÄµÚÒ»¸Ð¾õ£¬Ð»Ð»Äã 3-1 08:35
ÇëÎÊÕâÊÇÄÄÀïµÄÌâÄ¿£¿ÌâÄ¿ÓÐЩÎÊÌâÐèÒªÕå×ã¡
±û¶þËᣨHOOC-CH2-COOH£©
H2M= HM-+H+   PKa1=2.86
HM-= M2-+H+    PKa2=5.7
Ôò
Na2M    PKb1=8.3
             PKb2=11.14
¸ù¾ÝËá¼îµÎ¶¨ÐèÂú×ãµÄÌõ¼þ     c¡ÁKbi>10-9     À´¿´£¬ÌâÄ¿¶ÔÏó¸ù±¾²»Âú×ãÌõ¼þ£¬ËùÒÔÎÞ·¨ÓÃËá¼îµÎ¶¨·¨Íê³ÉµÄ¡£
6Â¥2009-02-28 22:47:00
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 085400µç×ÓÐÅÏ¢Àࣨ´¨´ó¿ØÖƹ¤³Ì£©Çóµ÷¼Á¿É¿çרҵ ÇóÀÏʦÁªÏµ +3 626776879 2026-04-08 3/150 2026-04-09 16:05 by Öí»á·É
[¿¼ÑÐ] 085600²ÄÁÏÓ뻯¹¤×¨Ë¶329 Çóµ÷¼Á +24 ¶îcc 2026-04-06 25/1250 2026-04-09 16:01 by wp06
[˶²©¼ÒÔ°] ÓÐûÓÐѧУ²ÄÁÏרҵÊÕ¿çµ÷(Ò»Ö¾Ô¸085410) +5 momo(Éϰ¶°æ) 2026-04-06 8/400 2026-04-09 15:07 by onlyÖÜ
[¿¼ÑÐ] Ò»Ö¾Ô¸ÉϺ£´óѧÉúÎïѧ346 +4 ÉϺ£´óѧ346µ÷¼Á 2026-04-03 4/200 2026-04-09 10:52 by yiminglu
[¿¼ÑÐ] 353Çóµ÷¼Á +8 Çç¿ÕÍòÀïair 2026-04-07 8/400 2026-04-09 00:18 by GouQ
[¿¼²©] ²ÄÁÏ·½Ïò¿¼²©£¬ÇóÍÆ¼ö +3 ÑÔÓïaaa 2026-04-05 4/200 2026-04-08 22:22 by nxgogo
[¿¼ÑÐ] 331Çóµ÷¼Á +5 luoxin0706. 2026-04-08 5/250 2026-04-08 22:15 by zhouyuwinner
[¿¼ÑÐ] Ò»Ö¾Ô¸ÄϾ©º½¿Õº½Ìì´óѧ ²ÄÁÏÓ뻯¹¤329·ÖÇóµ÷¼Á +11 Mr. Z 2026-04-05 12/600 2026-04-08 16:15 by luoyongfeng
[¿¼ÑÐ] 265Çóµ÷¼Á +19 Сľ³æ085600 2026-04-06 21/1050 2026-04-08 10:38 by ÄæË®³Ë·ç
[¿¼ÑÐ] 313Çóµ÷¼Á +3 Ê®Áùʰ½ 2026-04-07 3/150 2026-04-07 23:20 by lbsjt
[¿¼ÑÐ] 305Çóµ÷¼Á +4 77Qi 2026-04-06 4/200 2026-04-07 20:06 by shanqishi
[¿¼ÑÐ] ÉúÎïѧ363µ÷¼ÁÇóÖú +7 fanzhang6666 2026-04-06 9/450 2026-04-07 17:37 by lijunpoly
[¿¼ÑÐ] Ò»Ö¾Ô¸±±¾©»¯¹¤085600 310·ÖÇóµ÷¼Á +20 0856²ÄÁÏÓ뻯¹¤3 2026-04-04 22/1100 2026-04-07 15:14 by Éϰ¶¿ì¿ì
[¿¼ÑÐ] 372·Ö²ÄÁÏÓ뻯¹¤£¨085600£©Ó¢¶þÊý¶þÇóµ÷¼Á +4 À¶¼ãƬ 2026-04-06 4/200 2026-04-07 12:30 by dongzh2009
[¿¼ÑÐ] ÐŹ¤Ëù11408 340·Ö ±¾¿ÆÎ÷°²½»´ó×Ô¶¯»¯ +3 moontrek 2026-04-06 3/150 2026-04-07 09:56 by chongya
[¿¼ÑÐ] 297·Ö083200ÇóÖú +9 aekx 2026-04-05 9/450 2026-04-06 20:57 by flysky1234
[¿¼ÑÐ] Ò»Ö¾Ô¸±±½»´ó²ÄÁϹ¤³Ì×Ü·Ö358Çóµ÷¼Á +10 cs0106 2026-04-05 12/600 2026-04-06 19:41 by Î޼ʵIJÝÔ­
[¿¼ÑÐ] Ò»Ö¾Ô¸°²»Õij211 0703»¯Ñ§×Ü·Ö339Çóµ÷¼Á +7 Íí·ç²»Íí 2026-04-04 7/350 2026-04-06 14:06 by houyaoxu
[¿¼ÑÐ] 295Çóµ÷¼Á +8 FZAC123 2026-04-03 8/400 2026-04-05 17:46 by À¶ÔÆË¼Óê
[¿¼ÑÐ] 320µ÷¼Á +4 ũҵ¹¤³ÌÓëÐÅÏ¢¼ 2026-04-03 4/200 2026-04-03 21:40 by lbsjt
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û