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enen7230

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升温至80oC,保持温度,每隔15min加入KMnO4 35g,共加六次,反应液由紫色变为黑褐色,且产生MnO2沉淀

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ringzhu(金币+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.
4楼2011-02-23 17:01:22
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ringzhu(金币+2, 翻译EPI+1): 2011-03-02 12:59:24
升温至80oC,保持温度,每隔15min加入KMnO4 35g,共加六次,反应液由紫色变为黑褐色,且产生MnO2沉淀

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.
2楼2011-02-16 14:34:26
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zmy2010

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ringzhu(金币+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
3楼2011-02-16 14:41:29
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