±±¾©Ê¯ÓÍ»¯¹¤Ñ§Ôº2026ÄêÑо¿ÉúÕÐÉú½ÓÊÕµ÷¼Á¹«¸æ
²é¿´: 3749  |  »Ø¸´: 4

Ëæ·ç½£ÏÀ

ľ³æ (ÕýʽдÊÖ)

[ÇóÖú] ÇëÎÊPBS»º³åÈÜÒºÔõôϡÊÍ£¿

ÎÒÅäÖÃÁËPH=6.9 µÄ0.1mol/LµÄPBS»º³åÈÜÒº£¬ÎÒÏëµÃµ½0.01mol/LµÄ»º³åÈÜÒº¿ÉÒÔÖ±½Ó¼ÓˮϡÊÍô£¿PH»á±äô?Ï¡ÊͳÉ0.001ÄØ£¿
»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:

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

Ëæ·ç½£ÏÀ

ľ³æ (ÕýʽдÊÖ)

»òÕß˵ÊDZØÐèµÃÅäÈÜÒºµÄʱºòÅä³É0.01molµÄÁ×Ëá¶þÇâ¼ØºÍÁ×ËáÇâ¶þÄÆ²ÅÐа¡£¿
2Â¥2011-12-06 20:21:46
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

happy-john

ÖÁ×ðľ³æ (ÖªÃû×÷¼Ò)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï ¡ï ¡ï
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
Ëæ·ç½£ÏÀ: ½ð±Ò+5 2012-04-05 12:09:21
Ö±½ÓÏ¡ÊͳÉ0,01MµÄPHÓ¦¸Ã»á±äµÄ£¬Äã¿ÉÒÔÓÃÏ©Ëá»òÕßÏ¡¼î µ÷ÏÂph
»òÕßÄãÖ±½ÓÅäÖÆ0.01M
3Â¥2011-12-14 19:52:00
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

padodo

ÖÁ×ðľ³æ (Ö°Òµ×÷¼Ò)

ÅÖà½à½

ÓÅÐã°æÖ÷

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï ¡ï ¡ï
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
Ëæ·ç½£ÏÀ: ½ð±Ò+5 2012-04-05 12:09:29
Ö±½ÓÏ¡Êͼ´¿É£¬¼ÈÈ»ÊÇ¡°»º³å¡±ÈÜÒº£¬ÄÇôpHÏà¶ÔÀ´ËµÊDZȽÏÎȶ¨µÄ£¬±ä»¯²»»áÌ«´ó
ÎÒÓÐʲôÄܰïÖúÄúµÄÂð£¿
4Â¥2011-12-14 20:27:52
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

382481977

ľ³æ (СÓÐÃûÆø)

Ö±½ÓÏ¡Êͼ´¿É¡£
5Â¥2012-09-28 09:24:27
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ Ëæ·ç½£ÏÀ µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 266·Ö£¬Ò»Ö¾Ô¸µçÆø¹¤³Ì£¬±¾¿Æ²ÄÁÏ£¬Çó²ÄÁÏרҵµ÷¼Á +9 ÍÛºôºßºôºß 2026-04-02 10/500 2026-04-06 19:47 by jean5056
[¿¼ÑÐ] 0703×Ü·Ö331Çóµ÷¼Á +12 ZY-05 2026-04-04 16/800 2026-04-06 17:54 by lijunpoly
[¿¼ÑÐ] 385·Ö ÉúÎïѧ£¨071000£©Çóµ÷¼Á +12 qf626 2026-04-01 12/600 2026-04-06 17:36 by 52305043001
[¿¼ÑÐ] 266Çóµ÷¼Á +19 ÑôÑôÍÛÈû 2026-04-01 19/950 2026-04-06 15:47 by lin-da
[¿¼ÑÐ] 319·Ö085702°²È«¹¤³ÌÇóµ÷¼Á +4 rious 2026-04-05 4/200 2026-04-06 11:08 by ¾²¾²¾²¾²¾²¾²¾²¾
[¿¼ÑÐ] »¯Ñ§µ÷¼Á +17 °¬Ö¾ºã 2026-04-03 18/900 2026-04-06 07:10 by jj987
[¿¼ÑÐ] Ò»Ö¾Ô¸½­ÄÏ´óѧ085501»úе¹¤³Ìר˶326·Ö£¬±¾¿Æ¼Ñľ˹´óѧ +5 ¹ËÈô¸¡Éú 2026-04-03 9/450 2026-04-05 09:57 by 1753564080
[¿¼ÑÐ] 341Çóµ÷¼Á +3 ѧÎÞÖ¹¾³£¬³å 2026-04-05 3/150 2026-04-05 09:40 by lbsjt
[¿¼ÑÐ] ²ÄÁÏÓ뻯¹¤306·ÖÕÒµ÷¼Á +12 ²×º£ÇáÖÛe 2026-04-03 13/650 2026-04-04 23:45 by lqwchd
[¿¼ÑÐ] 341Çóµ÷¼Á +3 Âå¶àÂÞ 2026-04-02 4/200 2026-04-04 21:36 by ÖÇÄÜÖÇ»Û
[¿¼ÑÐ] 292Çóµ÷¼Á +11 2022080213 2026-04-04 13/650 2026-04-04 18:38 by macy2011
[¿¼ÑÐ] 265Çóµ÷¼Á +20 ÁºÁºÐ£Ð£ 2026-04-01 21/1050 2026-04-04 00:38 by userper
[¿¼ÑÐ] Êý¶þÓ¢¶þ348Çóµ÷¼Á +4 hxdzj1 2026-04-03 5/250 2026-04-03 21:25 by zhq0425
[¿¼ÑÐ] ±§Ç¸ +5 ÌïºéÓÐ 2026-03-30 5/250 2026-04-03 10:24 by linyelide
[¿¼ÑÐ] Ò»Ö¾Ô¸±±¾©¿Æ¼¼´óѧ085601²ÄÁϹ¤³ÌÓ¢Ò»Êý¶þ³õÊÔ×Ü·Ö335Çóµ÷¼Á +9 Ë«ÂíβƦÀϰå2 2026-04-01 9/450 2026-04-02 12:14 by oooqiao
[¿¼ÑÐ] 324Çóµ÷¼Á +5 ÏëÉÏѧÇóµ÷ 2026-04-01 6/300 2026-04-02 10:16 by sanrepian
[¿¼ÑÐ] Çóµ÷¼Á£¬Ò»Ö¾Ô¸±±ÁÖʳƷÓëÓªÑø095500£¬301·Ö£¬ÒѹýÁù¼¶£¬ÓпÆÑо­Àú +4 ¿ìÀÖ´¢Ðî¹Þ 2026-03-31 4/200 2026-04-01 09:26 by JourneyLucky
[¿¼ÑÐ] 340Çóµ÷¼Á +4 Ï£ÍûÈç´Ëi 2026-03-31 4/200 2026-03-31 16:40 by 690616278
[¿¼ÑÐ] ¿¼Ñе÷¼ÁÇóÖú +7 13287130938 2026-03-31 7/350 2026-03-31 16:39 by 690616278
[¿¼ÑÐ] 323·Ö ʳƷÓëÓªÑøµ÷¼Á +3 ºÙooo 2026-03-31 3/150 2026-03-31 09:38 by longlotian
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û