pH值 - 维基百科，自由的百科全书
网页pH，亦称pH值、氢离子浓度指数、酸值、酸鹼值 [1] 、「⿰离巠」（離氫切、注音： ㄌㄧㄥˊ 、拼音：líng）標值 [2] ，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。
pH - Wikipedia
网页In chemistry, pH (/ p iː ˈ eɪ tʃ / pee-AYCH), also referred to as acidity or basicity, historically denotes "potential of hydrogen" (or "power of hydrogen"). [1] It is a logarithmic scale used to specify the acidity or basicity of aqueous solutions.
酸碱度 - 百度百科
网页酸碱度(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。
PH | Definition, Uses, & Facts | Britannica
网页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.
What Is pH and What Does It Measure? - ThoughtCo
网页2019年5月6日 · pH describes how acidic or basic an aqueous solution is, where a pH below 7 is acidic and a pH greater than 7 is basic. pH of 7 is considered neutral (e.g., pure water). Typically, values of pH range from 0 to 14, although very strong acids may have a negative pH , while very strong bases may have a pH exceeding 14.
What Is pH? The pH Formula & Equation - ChemTalk
网页What is pH? pH is a measure of how basic or acidic a substance is. pH has a range of 0-14. A pH greater than 7 means the substance is basic. A pH less than 7 means the substance is acidic. When the pH is exactly 7 that indicates that the substance is neutral. An acidic substance is anything that will give up a proton.
pH Scale - pH | Dilution | Concentration - PhET Interactive …
网页Test the pH of things like coffee, spit, and soap to determine whether each is acidic, basic, or neutral. Visualize the relative number of hydroxide ions and hydronium ions in solution. Switch between logarithmic and linear scales. Investigate whether changing the volume or diluting with water affects the pH. Or you can design your own liquid!
Khan Academy
网页If you're seeing this message, it means we're having trouble loading external resources on our website. If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.
ph 和 PH 的区别是什么？ - 知乎
网页2015年10月22日 · 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 ….
15.7: An Introduction to pH - Chemistry LibreTexts
网页2023年4月20日 · pH is defined as the negative log of hydrogen ion concentration. It can be used to describe the relative acidity (or basicity) of a solution. Because it is based on a logarithmic scale, a change in …