²é¿´: 1701  |  »Ø¸´: 4

wangdianxi8

½ð³æ (СÓÐÃûÆø)

[½»Á÷] ¡¾ÇóÖú¡¿ÖظõËá¼ØÓëÁò»¯ÄÆÔÚ¼îÐÔÌõ¼þϲúÎï ÒÑÓÐ3È˲ÎÓë

Çë½ÌÖØ¸õËá¼ØÓëÁò»¯ÄÆÔÚÇâÑõ»¯ÄÆ´æÔÚµÄÌõ¼þÏ·´Ó¦²úÎïÊÇʲô£¿
K2Cr2O7+Na2S+NaOH
»Ø¸´´ËÂ¥
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

wangdianxi8

½ð³æ (СÓÐÃûÆø)

ΪʲôûÈ˻شð£¬ÊDz»ÄÜ·´Ó¦Âð£¿

ΪʲôûÈ˻شð£¬ÊDz»ÄÜ·´Ó¦Âð£¿
2Â¥2010-09-09 12:35:06
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

HRFE

гæ (³õÈëÎÄ̳)

¡ï
Сľ³æ(½ð±Ò+0.5):¸ø¸öºì°ü£¬Ð»Ð»»ØÌû½»Á÷
ÄÜ·´Ó¦£¬Ö÷ÒªÊǰѶþ¼ÛÁòÑõ»¯
3Â¥2010-09-10 21:10:22
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ÎÞ±¾Ö®ÄÁ

Í­³æ (СÓÐÃûÆø)

ËáÐÔÌõ¼þÄܹ»·´Ó¦£¬¼îÐÔÌõ¼þÀë×Ó·½³ÌʽÊÔÓÃËùÓÐÓпÉÄܵÄÑõ»¯²úÎïºÍ»¹Ô­²úÎï¾ùδÄÜÅ䯽£¬¹ÊÍÆ¶ÏÔÚ¼îÐÔÌõ¼þϲ»·´Ó¦
ÎÒÒªÎÒµÄÉúÃü¸ü¾«²Ê
4Â¥2010-09-11 01:54:46
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ÎÞ±¾Ö®ÄÁ

Í­³æ (СÓÐÃûÆø)

¡ï
Сľ³æ(½ð±Ò+0.5):¸ø¸öºì°ü£¬Ð»Ð»»ØÌû½»Á÷
×òÌ쩵ôÒ»ÖÖÇé¿ö£¬½ñÌì·¢ÏÖÁË£¬Èç¹ûÄÜ·´Ó¦ÆäÀë×Ó·½³ÌʽΪ£º
2Cr2O72- +  S2- +  4OH-   = 4CrO32-+  SO42-  + 2H2O
ÎÒÒªÎÒµÄÉúÃü¸ü¾«²Ê
5Â¥2010-09-11 21:25:11
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ wangdianxi8 µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 311Çóµ÷¼Á +4 ¶¬Ê®Èý 2026-03-18 4/200 2026-03-18 21:47 by ¾¡Ë´Ò¢1
[¿¼ÑÐ] 321Çóµ÷¼Á +3 ºÎÈó²É123 2026-03-18 3/150 2026-03-18 21:27 by li123456789.
[¿¼ÑÐ] 344Çóµ÷¼Á +6 knight344 2026-03-16 7/350 2026-03-18 20:13 by walc
[½Ìʦ֮¼Ò] ½¹ÂÇ +8 Ë®±ùÔÂÔÂÒ°Íà 2026-03-13 12/600 2026-03-18 15:27 by ßäÎØß÷ÎØ
[¿¼ÑÐ] 314Çóµ÷¼Á +8 ÎÞи¿É»÷µÄ¾ÞÈË 2026-03-12 8/400 2026-03-18 14:50 by haxia
[¿¼ÑÐ] Ò»Ö¾Ô¸Î÷ÄϽ»´ó£¬Çóµ÷¼Á +4 ²Ä»¯ÖðÃÎÈË 2026-03-18 4/200 2026-03-18 14:22 by 007_lilei
[¿¼ÑÐ] 303Çóµ÷¼Á +4 î£08 2026-03-17 6/300 2026-03-18 11:01 by Iveryant
[¿¼ÑÐ] 265Çóµ÷¼Á +3 ÁºÁºÐ£Ð£ 2026-03-17 3/150 2026-03-18 09:12 by zhukairuo
[¿¼ÑÐ] 334Çóµ÷¼Á +3 Ö¾´æ¸ßÔ¶ÒâÔÚ»úÐ 2026-03-16 3/150 2026-03-18 08:34 by lm4875102
[¿¼²©] 26²©Ê¿ÉêÇë +3 1042136743 2026-03-17 3/150 2026-03-17 23:30 by ÇáËɲ»ÉÙËæ
[¿¼ÑÐ] ¿¼ÑÐÇóµ÷¼Á +3 éÙËÌ. 2026-03-17 4/200 2026-03-17 21:43 by ÓÐÖ»ÀêÅ«
[¿¼ÑÐ] 268Çóµ÷¼Á +7 ºÃÔËÁ¬Ã಻¾ø 2026-03-12 8/400 2026-03-17 20:28 by xilongliang
[¿¼ÑÐ] ¿¼Ñл¯Ñ§Ñ§Ë¶µ÷¼Á£¬Ò»Ö¾Ô¸985 +4 ÕÅvvvv 2026-03-15 6/300 2026-03-17 17:15 by ruiyingmiao
[¿¼ÑÐ] 26¿¼ÑÐÇóµ÷¼Á +6 ؼºêSir 2026-03-13 6/300 2026-03-17 16:13 by ×íÔÚ·çÀï
[¿¼ÑÐ] 085600²ÄÁÏÓ뻯¹¤ Çóµ÷¼Á +13 enenenhui 2026-03-13 14/700 2026-03-16 15:19 by ÁËÁËÁËÁË¡£¡£
[¿¼ÑÐ] ÇóÀÏʦÊÕÁôµ÷¼Á +4 jiang½ª66 2026-03-14 5/250 2026-03-15 20:11 by Winj1e
[¿¼ÑÐ] 289Çóµ÷¼Á +4 ÕâôÃû×ÖÕ¦Ñù 2026-03-14 6/300 2026-03-14 18:58 by userper
[¿¼ÑÐ] 255Çóµ÷¼Á +3 Àî¼Î»Û£¬ 2026-03-12 4/200 2026-03-14 16:58 by ÓÐÖ»ÀêÅ«
[¿¼ÑÐ] 308Çóµ÷¼Á +3 ÊÇLupa°¡ 2026-03-12 3/150 2026-03-13 14:30 by Çóµ÷¼Ázz
[¿¼ÑÐ] 289Çóµ÷¼Á +3 ÀîÕþÓ¨ 2026-03-12 3/150 2026-03-13 11:02 by Çóµ÷¼Ázz
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û