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wuyao118金虫 (小有名气)
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[求助]
请帮忙将一段话翻译成英文
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| 首先，称取0.5 g BiNO3于锥形瓶中，加入10 mL H2O溶解, 即得澄清透明的溶液①，其浓度为x mol•L-1；再称取0.2 g NaOH于烧杯中，加入2 mL 44 ℃的蒸馏水让其溶解，并用 2 mol•L-1的HCl溶液调节其至一定的pH值，即得溶液②，浓度为b mol•L-1；然后，将溶液A放入分液漏斗中，并缓慢地滴加到锥形瓶中的溶液B中，同时磁力搅拌，即有绿色沉淀生成。滴完后，将锥形瓶置于微波炉中，分别在20%的火力下微波加热不同时间，再从微波炉中取出锥形瓶，在室温下搅拌15 min。将沉淀离心分离，在恒温干燥箱中于55 ℃下干燥3 h。 |
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wuyao118: 金币+60, 翻译EPI+1, 谢谢 2012-04-21 19:52:09
wuyao118: 金币+60, 翻译EPI+1, 谢谢 2012-04-21 19:52:09
| First of all, weighed 0.5 g of BiNO3 into the Erlenmeyer flask and add 10 mL of H2O to dissolve it as a clear solution ①, the concentration of x mol • L-1; Weigh of 0.2 g of NaOH in the beaker, add 2 mL of44 ° C distilled water and allowed to dissolve, and to a certain pH value adjusted with 2 mol • L-1 HCl solution, that was the solution ② The concentration of b mol • L-1; then, solution A into a separatory funneland slowly dropped into the conical flask of solution B, while magnetic stirring, namely green precipitate formed. Drops after the flask into a microwave oven, microwave heating at different times, respectively, in 20% of the fire under, and then remove the flask from the microwave, stirring for 15 min at room temperature. Sedimentation centrifuge, in a thermostatic oven dried at 55 ℃ for 3 h. |
2楼2012-04-21 18:20:46
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至尊木虫 (职业作家)
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wuyao118: 金币+30 2012-04-21 19:53:27
wuyao118: 金币+30 2012-04-21 19:53:27
| First of all, to a cone-shaped bottle , 0.5 g BiNO3 , 10 mL H2O solution were added , which clarified a transparent solution, and its concentration is x MOL • L-1; Then we took 0.2 g NaOH in the beaker, and added 2 mL of 44 degrees centigrade distilled water for dissolving, and used 2 mol • L-1 HCl solution to adjust its pH to a certain value, called solution ②, and its concentration was b MOL • L-1 .After that, we took the solution of A into a separatory funnel, which was slowly dropped into the cone-shaped bottle of solution b on magnetic agitating .Upon completed ,we got a green precipitate. After dropping out, cone-shaped bottles was placed in a microwave oven in 20% microwave heating with a different firepower time, then we removed the Erlenmeyer flask from the microwave oven, stirring 15 min at room temperature. We separated the precipitation ,and the result product was dryed under constant temperature in the drying oven at 55 ° c for 3 h. |
3楼2012-04-21 18:31:08
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wuyao118: 金币+60, 谢谢 2012-04-21 19:52:19
wuyao118: 金币+60, 谢谢 2012-04-21 19:52:19
| First of all, weigh 0.5 g bismuth nitratein to the conical flask, and add 10 mL water to dissolve, then obain a clear and transparent solution, its concentration is X mol L-1;weigh 0.2 g sodium hydroxide to the beaker with 2 mL distilled water at 44℃ to dissolve , and add 2 mol L-1 hydrochloric acid solution to adjust it to a certain pH value, hence the solution ② is obained ,its concentration is b mol, L-1; then, pour the solution A in a separatory funnel, and slowly dripped into the conical flask of solution B with the magnetic stirring, namely green sediments are generated.After the dropped out, put the conical bottle into a microwave oven,and heat in 20% under the fire of microwave heating for different time, then take the conical flask out from the microwave oven , stir at room temperature for 15 min.separate the sediments centrifugally , then dry in the thermostatic dry box at 55 ℃ for 3 hours. |
4楼2012-04-21 18:36:52