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ÉýÎÂÖÁ80oC£¬±£³Öζȣ¬Ã¿¸ô15min¼ÓÈëKMnO4 35g£¬¹²¼ÓÁù´Î£¬·´Ó¦ÒºÓÉ×ÏÉ«±äΪºÚºÖÉ«£¬ÇÒ²úÉúMnO2³Áµí

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ringzhu(½ð±Ò+2, ·­ÒëEPI+1): 2011-03-02 12:59:24
ÉýÎÂÖÁ80oC£¬±£³Öζȣ¬Ã¿¸ô15min¼ÓÈëKMnO4 35g£¬¹²¼ÓÁù´Î£¬·´Ó¦ÒºÓÉ×ÏÉ«±äΪºÚºÖÉ«£¬ÇÒ²úÉúMnO2³Áµí

Heating up and maintain the temperature at 80oC, then add 35g KMnO4 every 15min, total 6 times. The colour of the reaction solution would change from purple to dark brown. In addition, MnO2 precipitates would be produced.
2Â¥2011-02-16 14:34:26
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zmy2010

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ringzhu(½ð±Ò+2): 2011-03-02 12:59:32
Temperature to keep temperature 80oC, every 15min join 35g, total KMnO4 add six times, reaction liquid by purple to a dark brown, and produce MnO2 precipitation
3Â¥2011-02-16 14:41:29
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ringzhu(½ð±Ò+2): 2011-03-02 12:59:42
The solution is heated up to 80 degree C and the temperature is maintained, then 35g of KMnO4 is added every 15min, total 6 times. The color of the solution would change from purple to dark brown and the precipitate of MnO2s would be obtained.
4Â¥2011-02-23 17:01:22
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