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氢氧化钾比氢氧化钠难脱水

来源:郑州天顺食品添加剂有限公司 发布时间:2022-11-05 17:25:34 关注: 0 次
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因为氢氧化钾比氢氧化钠难脱水,市售品的纯度一般只能达到85%~86%。如需提纯可按照提纯氢氧化钠的相同的方法进行提纯。氢氧化钾经精制后,预热,不断注入电解槽中,电解生成液经浓缩、脱色而得。
Because potassium hydroxide is more difficult to dehydrate than sodium hydroxide, the purity of commercially available products can only reach 85% ~ 86%. If purification is required, it can be purified according to the same method of purifying sodium hydroxide. Potassium hydroxide is refined, preheated and continuously injected into the electrolytic cell. The electrolytic generated solution is obtained by concentrating and decolorizing.
氢氧化钾溶于水时放出大量的热,很难测得大于30℃时的溶解度(氢氧化钠也是这样),如果说乙酸不算固体,那给举个其它的例子,SbCl3在0℃时溶解度是601.6克,60℃时溶解度是4531克,80℃时是无穷大。确实如此,一滴水就能改变分子间的力,使它从固态变为液态。即使是水解,它也是在水中溶解了。
When potassium hydroxide is dissolved in water, it gives off a lot of heat, so it is difficult to measure the solubility greater than 30 ℃ (the same is true for sodium hydroxide). If acetic acid is not a solid, give another example. The solubility of SbCl3 is 601.6g at 0 ℃, 4531g at 60 ℃ and infinity at 80 ℃. Indeed, a drop of water can change the force between molecules from solid to liquid. Even if it is hydrolyzed, it is dissolved in water.
氢氧化钾
由于氢氧化钾溶解于水会释放出大量的热量,浓氢氧化钾也具有强烈的腐蚀性。溶解氢氧化钾时应将氢氧化钾加入到水中。先将一定量的水加入到烧杯中,再慢慢地将称好的氢氧化钾一点点加入水中,并不断搅拌,使其加速溶解,而且氢氧化钾溶解时要放出大量的热量,搅拌可使溶液温度均匀。
As potassium hydroxide dissolves in water, it will release a lot of heat, and concentrated potassium hydroxide also has strong corrosivity. When dissolving potassium hydroxide, potassium hydroxide shall be added to water. First add a certain amount of water to the beaker, then slowly add the weighed potassium hydroxide to the water a little, and keep stirring to accelerate the dissolution. Moreover, a large amount of heat should be released when the potassium hydroxide is dissolved. Stirring can make the solution temperature uniform.
此外是钾一旦成为化合物,碱的碱性强弱与碱的电离程度有关。肥皂、碱性就越大金属活泼顺序表里钾在钠前面前面都是氢氧,所以氢氧化钾的碱性要比氢氧化钠的碱性大哦!
In addition, once potassium becomes a compound, the alkalinity of the base is related to the ionization degree of the base. The greater the soap and alkalinity, the more active the metal is. In the table, potassium is hydrogen and oxygen in front of sodium, so the alkalinity of potassium hydroxide is greater than that of sodium hydroxide!
金属活动性顺序是钾钠钾的氧化性更强,氢氧化钾,氢氧化钾市场价比氢氧化钠贵一些这是,所以氢氧化钾更稳定,表现为熔熔点沸点更高熔沸点:KOH,答氢氧化钠:利用焰色反应。就是氢氧化钾。
The order of metal activity is potassium, sodium and potassium. Potassium hydroxide has stronger oxidation. The market price of potassium hydroxide is more expensive than sodium hydroxide. This is why potassium hydroxide is more stable, manifested in higher melting point and boiling point. Melting boiling point: Koh, answer sodium hydroxide: use flame reaction. It's potassium hydroxide.
氢氧化钾产品的相关内容就讲解到这里了,如果您有兴趣了解更为详细的信息就来关注网站www.jinhao360.com!
That's all about potassium hydroxide products. If you are interested in more detailed information, please follow the website www.jinhao360.com com!

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