²é¿´: 748  |  »Ø¸´: 3
µ±Ç°Ö÷ÌâÒѾ­´æµµ¡£

·ëÒåÖ¾

½ð³æ (³õÈëÎÄ̳)

[½»Á÷] ÇóÖúPH 8.8 µÄÅðËỺ³åÒº£¨0.1mol/l£©ÈçºÎÅäÖÃ

ÇóÖúPH 8.8 µÄÅðËỺ³åÒº£¨0.1mol/l£©ÈçºÎÅäÖÃ
ÒÑÔÄ   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

aligg2000

Í­³æ (СÓÐÃûÆø)

²»¹âÊÇÅðËá°É£¬»¹º¬ÁËÆäËüµÄÓ¦¸Ã¡£Òª²»È»pHûÓÐ8.8£¬Ó¦¸ÃÊÇÅðËáÑÎ:³ÆÈ¡Åðɰ£¬ÅðËᣬµ÷½ÚpHÖµ£¬¼ÆËãϰÉ
2Â¥2008-12-13 16:54:33
ÒÑÔÄ   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

kkmgkcc

½ð³æ (СÓÐÃûÆø)

¡ï ¡ï ¡ï ¡ï
·ëÒåÖ¾(½ð±Ò+4,VIP+0):лл£¬·Ç³£ºÃ
Äã¿ÉÒÔ½è¼øÒÔÏ·½·¨ÅäÖÆ0.1MÅðËỺ³åÒº£¨pH 8.8£©
ÅðËá-Åðɰ»º³åÒº£¨0.1MÅðËá¸ù£©
ÅðɰNa2B4O7¡¤10H2O·Ö×ÓÁ¿£½381.43 0.025M(=0.1MÅðËá¸ù)ÈÜҺΪ9.54g/L
ÅðËáH3BO3·Ö×ÓÁ¿£½61.84 0.1MÈÜҺΪ6.184g/L
ÅðɰÒ×ʧȥ½á¾§Ë®£¬±ØÐëÔÚ´øÈûµÄÆ¿Öб£´æ

ÓÉÓÚ»º³åÒºÖеÄÅðËá¸ùµÄŨ¶ÈΪÅðɰÓëÅðËá²úÉúµÄÅðËá¸ùµÄ×ܺͣ¬ÄÇô£º
È¡0.1MÅðËáÈÜÒº20ml£¬ÓÃ0.025MÅðɰÈÜÒºÔÚPH¼ÆÉϵ÷½ÚPHÖÁ6.5£¬¿´¼ÓÈëÁ˶àÉÙµÄ0.025MÅðɰÈÜÒº£¬¾Ù¸öÀý×Ó±ÈÈç¼ÓÈëÁË1.5mlµÄ0.025MÅðɰÈÜÒº£¬ÄÇô0.1MµÄÅðËỺ³åÒºÅäÖÆ·½·¨¼ÆËãÈçÏ£º
21.5/1.5=13.333, 0.05MÅðɰÈÜÒºµÄ¼ÓÈëÁ¿Îª£º20/(13.333+1)=1.395ml£¬
0.1MÅðËáÈÜÒº¼ÓÈëÁ¿Îª£º20-1.395=18.605¡£

ÐèÒª¸ü´óÁ¿µÄÈÜÒºÖ»ÐèÒª°´±ÈÀý·Å´ó¼´¿É¡£
3Â¥2008-12-13 18:48:53
ÒÑÔÄ   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

chl3565

Ìú³æ (³õÈëÎÄ̳)

£®ÅðËá¨CÅðɰ»º³åÒº£¨0.2MÅðËá¸ù£©
pH        0.05MÅðɰ£¨ºÁÉý£©        0.2MÅðɰ£¨ºÁÉý£©        pH        0.05MÅðɰ£¨ºÁÉý£©        0.2MÅðËᣨºÁÉý£©
7.4
7.6
7.8
8.0        1.0
1.5
2.0
3.0        9.0
8.5
8.0
7.0        8.2
8.4
8.7
9.0        3.5
4.5
6.0
8.0        6.5
5.5
4.0
2.0
ÅðɰNa2B4O7•H2O,·Ö×ÓÁ¿=381.43;0.05MÈÜÒº£¨=0.2MÅðËá¸ù£©º¬19.07¿Ë/Éý¡£
ÅðËáH2BO3,·Ö×ÓÁ¿=61.84,0.2MÈÜҺΪ12.37¿Ë/Éý¡£
ÅðɰÒ×ʧȥ½á¾§Ë®£¬±ØÐëÔÚ´øÈûµÄÆ¿Öб£´æ¡£
4Â¥2008-12-15 08:47:33
ÒÑÔÄ   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ ·ëÒåÖ¾ µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] Ò»Ö¾Ô¸¼ªÁÖ´óѧ²ÄÁÏѧ˶321Çóµ÷¼Á +9 Ymlll 2026-03-18 12/600 2026-03-20 00:01 by 23Postgrad
[¿¼ÑÐ] 288Çóµ÷¼Á +15 ÓÚº£º£º£º£ 2026-03-19 15/750 2026-03-19 22:41 by ѧԱ8dgXkO
[¿¼ÑÐ] ÕÐÊÕµ÷¼Á˶ʿ +4 lidianxing 2026-03-19 10/500 2026-03-19 16:05 by Óà÷ëÓà
[¿¼ÑÐ] 346Çóµ÷¼Á[0856] +3 WayneLim327 2026-03-16 6/300 2026-03-19 11:21 by WayneLim327
[¿¼ÑÐ] 085410È˹¤ÖÇÄÜר˶317Çóµ÷¼Á£¨0854¶¼¿ÉÒÔ£© +3 xbxudjdn 2026-03-18 3/150 2026-03-18 22:14 by zhq0425
[¿¼ÑÐ] 328Çóµ÷¼Á£¬Ó¢ÓïÁù¼¶551£¬ÓпÆÑо­Àú +3 ÉúÎ﹤³Ìµ÷¼Á 2026-03-17 7/350 2026-03-18 20:41 by Wangjingyue
[¿¼ÑÐ] 344Çóµ÷¼Á +6 knight344 2026-03-16 7/350 2026-03-18 20:13 by walc
[¿¼ÑÐ] 085600²ÄÁÏÓ뻯¹¤ +5 °²È«Éϰ¶£¡ 2026-03-16 5/250 2026-03-18 15:33 by cmz0325
[¿¼ÑÐ] 085601ר˶£¬×Ü·Ö342Çóµ÷¼Á£¬µØÇø²»ÏÞ +5 share_joy 2026-03-16 5/250 2026-03-18 14:48 by haxia
[¿¼ÑÐ] 331Çóµ÷¼Á£¨0703Óлú»¯Ñ§ +7 ZY-05 2026-03-13 8/400 2026-03-18 14:13 by 007_lilei
[¿¼ÑÐ] ÉúÎïѧ071000 329·ÖÇóµ÷¼Á +3 ÎÒ°®ÉúÎïÉúÎﰮΠ2026-03-17 3/150 2026-03-18 10:12 by macy2011
[¿¼ÑÐ] 268Çóµ÷¼Á +8 Ò»¶¨ÓÐѧÉÏ- 2026-03-14 9/450 2026-03-17 17:47 by laoshidan
[¿¼ÑÐ] 085601Çóµ÷¼Á +4 Du.11 2026-03-16 4/200 2026-03-17 17:08 by ruiyingmiao
[¿¼ÑÐ] Ò»Ö¾Ô¸ËÕÖÝ´óѧ²ÄÁϹ¤³Ì£¨085601£©×¨Ë¶ÓпÆÑо­ÀúÈýÏî¹ú½±Á½¸öʵÓÃÐÍרÀûÒ»ÏîÊ¡¼¶Á¢Ïî +6 ´ó»ðɽС»ðɽ 2026-03-16 8/400 2026-03-17 15:05 by ÎÞи¿É»÷111
[¿¼ÑÐ] ²ÄÁÏÓ뻯¹¤×¨Ë¶µ÷¼Á +5 heming3743 2026-03-16 5/250 2026-03-17 14:03 by Ó¸ÒÌ«¼àÍõ¹«¹«
[¿¼ÑÐ] Ò»Ö¾Ô¸ÄϾ©´óѧ£¬080500²ÄÁÏ¿ÆÑ§Ó빤³Ì£¬µ÷¼Á +4 Jy? 2026-03-16 4/200 2026-03-17 11:02 by gaoqiong
[¿¼ÑÐ] 304Çóµ÷¼Á +3 ÂüÊâ2266 2026-03-14 3/150 2026-03-16 16:39 by houyaoxu
[¿¼ÑÐ] ±¾¿ÆÄϾ©´óѧһ־Ը´¨´óҩѧ327 +3 ÂóÌï¸ûÕß 2026-03-14 3/150 2026-03-14 20:04 by ÍâÐÇÎÄÃ÷
[¿¼ÑÐ] 297Çóµ÷¼Á +4 ѧº£Æ¯²´ 2026-03-13 4/200 2026-03-14 11:51 by ÈÈÇéɳĮ
[¿¼ÑÐ] 266Çóµ÷¼Á +4 ѧԱ97LZgn 2026-03-13 4/200 2026-03-14 08:37 by zhukairuo
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û