氫氧化鈉與氫氧化鉀，誰的堿性強(qiáng)？氫氧化鉀的堿性比氫氧化鈉的堿性強(qiáng)。但是這是得有前提條件的，堿的堿性強(qiáng)弱與堿的電離程度有關(guān)。對(duì)于氫氧化鈉和氫氧化鉀都是完全電離的強(qiáng)堿來說，可以用金屬活潑性來判斷，即越活潑的金屬，對(duì)應(yīng)的氫氧化物堿性越強(qiáng)。

Sodium hydroxide or potassium hydroxide, whose alkalinity is stronger? The alkalinity of potassium hydroxide is stronger than that of sodium hydroxide. But this requires a prerequisite, as the alkalinity of the base is related to the degree of ionization of the base. For both sodium hydroxide and potassium hydroxide, which are fully ionized strong bases, metal activity can be used to determine, that is, the more active the metal, the stronger the alkalinity of the corresponding hydroxide.

簡(jiǎn)單來說，能區(qū)分兩個(gè)物質(zhì)酸堿性強(qiáng)弱的叫做區(qū)分溶劑，否則就叫做拉平溶劑。題目中說的氫氧化鈉和氫氧化鉀同時(shí)溶解在水中，都會(huì)完全電離，這就是說二者被水這個(gè)溶劑拉平了，而表現(xiàn)出了相同的堿性。如果采用乙醇或液氨等作為溶劑，即可區(qū)分出二者堿性的強(qiáng)弱。

Simply put, a solvent that can distinguish the strength of the acidity and alkalinity of two substances is called a distinguishing solvent, otherwise it is called a leveling solvent. The sodium hydroxide and potassium hydroxide mentioned in the title will be completely ionized when dissolved in water at the same time, which means that both are flattened by the solvent water and exhibit the same alkalinity. If ethanol or liquid ammonia are used as solvents, the alkalinity of the two can be distinguished.

堿的堿性強(qiáng)弱與溶液的堿性強(qiáng)弱這兩個(gè)概念是不同的。應(yīng)該是堿的堿性強(qiáng)弱比較。堿的堿性強(qiáng)弱與堿的電離程度有關(guān)，對(duì)于氫氧化鈉和氫氧化鉀這兩種完全電離的強(qiáng)堿來說，由金屬活潑性來判斷，從這個(gè)角度，氫氧化鉀比氫氧化鈉的堿性強(qiáng)。

The concepts of the alkalinity of an alkali and the alkalinity of a solution are different. It should be a comparison of the alkalinity of the alkali. The alkalinity of a base is related to the degree of ionization of the base. For two completely ionized strong bases, sodium hydroxide and potassium hydroxide, the metal activity is used to determine the alkalinity. From this perspective, potassium hydroxide is more alkaline than sodium hydroxide.

而溶液的堿性強(qiáng)弱是由氫氧根離子濃度大小決定的，氫氧根離子濃度越大堿性越強(qiáng)，摩爾濃度相同的氫氧化鈉溶液與氫氧化鉀溶液的堿性是相同的。

The alkalinity of a solution is determined by the concentration of hydroxide ions. The higher the concentration of hydroxide ions, the stronger the alkalinity. Sodium hydroxide solutions with the same molar concentration have the same alkalinity as potassium hydroxide solutions.

氫氧化鉀是以氯化鉀水溶液進(jìn)行電解，而氫氧化鈉則是以氯化鈉水溶液進(jìn)行電解，二者只是原料不同（一個(gè)是KCl,一個(gè)是NaCl),和產(chǎn)品不同（一個(gè)是KOH，一個(gè)是NaOH),相同的是都要經(jīng)過鹽水精制、電解等工序，且電解槽的結(jié)構(gòu)都基本一樣，當(dāng)然許多細(xì)節(jié)肯定有差異的。

Potassium hydroxide is electrolyzed using an aqueous solution of potassium chloride, while sodium hydroxide is electrolyzed using an aqueous solution of sodium chloride. The only difference between the two is that the raw materials are different (one is KCl and the other is NaCl), and the products are different (one is KOH and the other is NaOH). The same is that both require processes such as brine refining and electrolysis, and the structure of the electrolytic cell is basically the same. Of course, many details are definitely different.

氫氧化鉀的摩爾質(zhì)量大于氫氧化鈉的摩爾質(zhì)量；

The molar mass of potassium hydroxide is greater than the molar mass of sodium hydroxide;

當(dāng)兩者的物質(zhì)的量濃度相同時(shí)，溶液的堿性相同；

When the concentration of both substances is the same, the alkalinity of the solution is the same;

當(dāng)兩者的溶液質(zhì)量分?jǐn)?shù)相同時(shí)，氫氧化鈉溶液的堿性大于氫氧化鉀的堿性；

When the mass fraction of both solutions is the same, the alkalinity of sodium hydroxide solution is greater than that of potassium hydroxide solution;

氫氧化鉀的大于氫氧化鈉，但配置相同堿性溶液時(shí)，需要?dú)溲趸浀牡馁|(zhì)量要大一些。

The price of potassium hydroxide is higher than that of sodium hydroxide, but when configuring the same alkaline solution, the quality of potassium hydroxide needs to be higher.

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