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我心永恒1567

木虫 (正式写手)

[交流] 修改一段英文

After evaporation to dryness of the aqueous layer then with 0.5 M Na2CO3 neutralizing CF3COOH until the pH near neutral
投稿的文章,说是表述欠妥

[ Last edited by 我心永恒1567 on 2010-3-1 at 14:39 ]
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xiaoqihu

铁杆木虫 (著名写手)

我心永恒1567(金币+1): 2010-03-04 11:21
After evaporation to dryness of the aqueous layer then with 0.5 M Na2CO3 neutralizing CF3COOH until the pH near neutral

我都不知道你这个干燥过程是在pH之前还是之后,你最好吧中文写出来吧


1. after evaporation, the aqueous layer, then, was neutralized by Na2CO3.


2. after evaporation, the excess CF3COOH in aqueous layer was neutralized  by Na2CO3.


3. before evaporation, the excess CF3COOH in aqueous layer was neutralized by Na2CO3

[ Last edited by xiaoqihu on 2010-3-3 at 09:39 ]
不是不追求,而是不强求
3楼2010-03-02 22:58:27
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sunyixinq

金虫 (著名写手)

我心永恒1567(金币+1): 2010-03-04 11:20
倒过来吧,0.5 M Na2CO3 to neutraliCF3COOH until the pH walue is about 7 after evaporation of the aqueous layer to dry
其实,我是路过的,什么都与我无关
2楼2010-03-01 18:13:15
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