Ph.tum.de - pH值 - 维基百科，自由的百科全书

Provided by Alexa ranking, ph.tum.de has ranked N/A in N/A and 1,930,711 on the world. ph.tum.de reaches roughly 1,614 users per day and delivers about 48,412 users each month. The domain ph.tum.de uses a Commercial suffix and it's server(s) are located in N/A with the IP number 129.187.254.147 and it is a .tum.de domain.

WEBpH，亦称pH值、氢离子浓度指数、酸值、酸鹼值、「⿰离巠」（離氫切、注音：ㄌㄧㄥˊ 、拼音：líng）標值，是溶液中氢离子活度的一种标度，也是衡量溶液酸碱程度的最普遍标准。

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pH值 - 维基百科，自由的百科全书
wikipedia.org

https://zh.wikipedia.org/wiki/PH%E5%80%BC

WEBpH，亦称pH值、氢离子浓度指数、酸值、酸鹼值、「⿰离巠」（離氫切、注音：ㄌㄧㄥˊ 、拼音：líng）標值，是溶液中氢离子活度的一种标度，也是衡量溶液酸碱程度的最普遍标准。

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pH - Wikipedia
wikipedia.org

https://en.wikipedia.org/wiki/PH

WEBA strong acid, such as hydrochloric acid, at concentration 1 mol dm −3 has a pH of 0, while a strong alkali like sodium hydroxide, at the same concentration, has a pH of 14. Since pH is a logarithmic scale, a difference of one in pH is equivalent to a tenfold difference in hydrogen ion concentration.

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酸碱度_百度百科
baidu.com

https://baike.baidu.com/item/%E9%85%B8%E7%A2%B1%E5%BA%A6/633190

WEB酸碱度(Pondus Hydrogenii)描述的是水溶液的酸碱性强弱程度，常用pH来表示溶液的酸碱度。热力学标准状况时，pH=7的水溶液呈中性，pH<7则显酸性，pH>7则显碱性。

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PH | Definition, Uses, & Facts | Britannica
britannica.com

https://www.britannica.com/science/pH

WEBMar 4, 2024 · pH, quantitative measure of the acidity or basicity of aqueous or other liquid solutions. The term, widely used in chemistry, biology, and agronomy, translates the values of the concentration of the hydrogen ion—which ordinarily ranges between about 1 and 10 −14 gram-equivalents per litre—into numbers between 0 and 14.

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ph 和 PH 的区别是什么？ - 知乎
zhihu.com

https://www.zhihu.com/question/36747054

WEBOct 22, 2015 · 度娘资料： pH值，亦称氢离子浓度指数、酸碱值，是溶液中氢离子活度的一种标度，也就是通常意义上溶液酸碱程度的衡量标准。. 这个概念是1909年由丹麦 ….

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pH Definition and Equation in Chemistry - ThoughtCo
thoughtco.com

https://www.thoughtco.com/definition-of-ph-in-chemistry-604605

WEBUpdated on May 06, 2019. pH is a measure of hydrogen ion concentration , a measure of the acidity or alkalinity of a solution. The pH scale usually ranges from 0 to 14. Aqueous solutions at 25°C with a pH less than 7 are acidic, while those with a pH greater than 7 are basic or alkaline.

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pH Scale: Acids, bases, pH and buffers (article) | Khan Academy
khanacademy.org

https://www.khanacademy.org/science/biology/water-acids-and-bases/acids-bases-and-ph/a/acids-bases-ph-and-bufffers

WEBThe pH scale is used to rank solutions in terms of acidity or basicity (alkalinity). Since the scale is based on pH values, it is logarithmic, meaning that a change of 1 pH unit corresponds to a ten-fold change in H + ‍ ion concentration. The pH scale is often said to range from 0 to 14, and most solutions do fall within this range, although ...

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pH, pOH, and the pH scale (article) | Khan Academy
khanacademy.org

https://www.khanacademy.org/science/chemistry/acids-and-bases-topic/acids-and-bases/a/ph-poh-and-the-ph-scale

WEBThe pH scale is a negative logarithmic scale. The logarithmic part means that pH changes by 1 unit for every factor of 10 change in concentration of H + . The negative sign in front of the log tells us that there is an inverse relationship between pH and [ H +] : when pH increases, [ H +] decreases, and vice versa.

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Introduction to pH (video) | Khan Academy
khanacademy.org

https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:solutions-acids-and-bases/x2613d8165d88df5e:intro-to-acids-and-bases/v/introduction-to-ph

WEBIntroduction to pH. The pH scale is used to determine the acidity or basicity (alkalinity) of a substance. Acidic substances have pH values below 7, while basic substances have pH values above 7; neutral substances have a pH of 7. The pH scale is logarithmic, so each step represents a 10-fold change in concentration.

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pH - Simple English Wikipedia, the free encyclopedia
wikipedia.org

https://simple.wikipedia.org/wiki/PH

WEBpH is a scale of acidity from 0 to 14. It tells how acidic or alkaline a substance is. More acidic solutions have lower pH. More alkaline solutions have higher pH. Substances that aren't acidic or alkaline (that is, neutral solutions) usually have a pH of 7. Acids have a pH that is less than 7. Alkalis have a pH that is greater than 7.

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