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war3202063

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Evaporation gave 4.48 g of a clear liquid, which was further purified  by recrystallization from hexane/acetone (95:5) to obtain 3.52 g of the
acid derivative as white crystals (72.9%).

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产率有效数字有两位就可以了 呵呵 很多操作带来的误差大过零点几的
3楼2010-11-20 21:51:07
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Evaporation gave a clear liquid(4.48 g), which was further purified  by recrystallization from hexane/acetone (95:5) to obtain the acid derivative as white crystals (3.52 g ,72.9%).
2楼2010-11-20 21:49:46
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war3202063(金币+1):谢谢! 2010-11-20 21:56:59
经蒸发得到得到4.48g澄清溶液,进一步在(浓度为95%正己烷)正己烷与丙酮混合溶剂中经重结晶得到3.52g白色酸性衍生物的晶体,其实际得率72.9%。
4楼2010-11-20 21:51:13
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war3202063(金币+3, 翻译EPI+1):谢谢! 2010-11-20 21:56:48
Evaporation gave 4.48 g of a clear liquid, which was further purified  by recrystallization from hexane/acetone (95:5) to obtain 3.52 g of the
acid derivative as white crystals (72.9%).
以为改英文呢 翻译如下哈
蒸发溶剂得到4.48g清亮液体,该液体经重结晶(环己烷/丙酮:95:5)可以得到3.52 g该酸的衍生物,为白色晶体(产率72.9%)
5楼2010-11-20 21:55:12
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