Question

求专业人士翻译啊

标定：称取0.15克预先在105℃干燥至恒重的基准三氧化二砷，称准至0.0001克。置于碘量瓶中，加10毫升氢氧化钠滴定液（0.1mol/L）微热使溶解，加20毫升蒸馏水，加1滴甲基橙指示液，用硫酸溶液（0.5mol/L）中和，使黄色转变为粉红色，加2克碳酸氢钠、50毫升水、2毫升淀粉指示液（5g/l），用配制好的碘溶液（0.1mol/L）滴定至溶液呈浅蓝色，同时做空白试验。
计算：C（1/2I2）=m/（V1-V2）×0.04946
m：三氧化二砷质量， g
V1：碘溶液之用量，毫升
V2：空白试验碘溶液之用量，毫升
0.04946：与1毫升碘标准溶液相当的以克表示的三氧化二砷的质量。
2. 2N硫酸溶液：
量取100毫升浓硫酸缓缓加入900毫升蒸馏水中，稀释至1000毫升。
3. 1%可溶性淀粉指示液：
取1.0克可溶性淀粉，加5毫升水使成糊状，在搅拌下将糊状物
加到90毫升沸腾的水中，煮沸1~2分钟，冷却稀释至100毫升，使用期为两周。

Answer 1

Calibration: say take 0.15 g in 105 ℃ dry in advance to the heng zhong benchmark of arsenic trioxide, says accurate to 0.0001 grams. In LiangPing iodine, add 10 ml sodium hydroxide titration solution (0.1 mol/L) the heat to dissolve, add 20 ml of distilled water, add 1 drop methyl orange instructions liquid, with sulfuric acid solution (0.5 mol/L) and, yellow for pink, add 2 grams of sodium bicarbonate, 50 ml water, 2 ml of starch liquid instructions (5 g/L), with the preparation good iodine solution (0.1 mol/L) titration solution to a shallow blue, at the same time be blank test.
Computing: C (1/2 I2) = m / (V1-v2) x 0.04946
M: arsenic trioxide quality, g
V1: iodine solution of the dosage, ml
V2: blank test of iodine solution dosage, ml
0.04946: and 1 ml iodine standard solution is in grams of said arsenic trioxide quality.
2. 2 N sulfuric acid solution:
Take 100 ml of strong sulfuric acid slowly add in 900 ml of distilled water, dilute to 1000 ml.
3. 1% soluble starch liquid instructions:
Take 1.0 grams of soluble starch, add 5 ml water into paste, stir in the next will paste
Add to 90 ml of boiling water, boil 1 ~ 2 minutes, cooling dilution to 100 milliliters, life for two weeks.

Answer 2

Calibration:
Weigh 0.15 g of benchmark arsenic trioxide pre-dried at 105 ℃ to constant weight. When weigh it, accurate to 0.0001 grams. Put it in the iodine flask, add 10 ml sodium hydroxide titration solution (0.1 mol/L) make it lukewarm to dissolve. Add 20 ml of distilled water, add 1 drop methyl orange indicating liquid,and neutralize it with sulfuric acid solution (0.5 mol/L) , turn it from yellow to pink, add 2 grams of sodium bicarbonate, 50 ml water, 2 ml of starch
indicating liquid (5 g/L),titrate it with the prepared iodine solution (0.1 mol/L)to light blue,and at the same time conduct the blank test.
Computing: C (1/2 I2) = m / (V1-v2) x 0.04946
M: arsenic trioxide quality, g
V1: the dosage of iodine solution , ml
V2: the dosage ofiodine solution used in blank test , ml
0.04946: the mass of arsenic trioxide in grams equivalent to 1 ml iodine standard solution.
2. 2 N sulfuric acid solution:
Take 100 ml of strong sulfuric acid slowly add in 900 ml of distilled water, dilute to 1000 ml.
3. 1% soluble starch liquid instructions:
Take 1.0 grams of soluble starch, add 5 ml water to paste, stirring the paste,add it to 90 ml of boiling water ,boil it for 1 to 2 minutes, cool and dilute it to 100 ml, it can be used in two weeks.
逐字翻译请采纳

Answer 3

Calibration: say take 0.15 g in 105 ℃ dry in advance to the heng zhong benchmark of arsenic trioxide, says accurate to 0.0001 grams. In LiangPing iodine, add 10 ml sodium hydroxide titration solution (0.1 mol/L) the heat to dissolve, add 20 ml of distilled water, add 1 drop methyl orange instructions liquid, with sulfuric acid solution (0.5 mol/L) and, yellow for pink, add 2 grams of sodium bicarbonate, 50 ml water, 2 ml of starch liquid instructions (5 g/L), with the preparation good iodine solution (0.1 mol/L) titration solution to a shallow blue, at the same time be blank test.
Computing: C (1/2 I2) = m / (V1-v2) x 0.04946
M: arsenic trioxide quality, g
V1: iodine solution of the dosage, ml
V2: blank test of iodine solution dosage, ml
0.04946: and 1 ml iodine standard solution is in grams of said arsenic trioxide quality.
2. 2 N sulfuric acid solution:

追问

不是自己翻译的吧？？？be blank test很坑爹的

追答

自己在字典上查的

追问

有恒重翻译成hengzhong的吗……好吧~还是谢谢你

追答

错，是
Constant weight

追问

能不能帮我翻译的好一点……这个太坑爹了

追答

好，你说怎样翻