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ph(来源:en.wikipedia.org)
It is a logarithmic scale used to specify the acidity or basicity of aqueous solutions. Acidic solutions (solutions with higher concentrations of hydrogen (H) ...
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pH值

pH,亦称pH值、氢离子浓度指数、酸值、酸碱值、“⿰离𢀖”标值,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。 维基百科
ph(来源:www.usgs.gov)
2019年6月19日 · pH is a measure of how acidic/basic water is. The range goes from 0 - 14, with 7 being neutral. pHs of less than 7 indicate acidity, ...
ph(来源:www.britannica.com)
PH, quantitative measure of the acidity or basicity of aqueous or other liquid solutions. The term, widely used in chemistry, biology, and agronomy, ...
ph(来源:www.epa.gov)
2023年11月6日 · The pH scale measures how acidic or alkaline a substance is. The scale ranges from 0 to 14. A pH of 7 is neutral. A pH less than 7 is acidic, ...
ph(来源:www.usgs.gov)
The pH scale measures how acidic an object is. Objects that are not very acidic are called basic. The scale has values ranging from zero (the most acidic) to 14 ...
ph(来源:www.epa.gov)
2024年2月29日 · pH is a measure of hydrogen ion concentration in an aqueous solution. pH decreases as hydrogen ion concentration increases, and these acidic ...
A measure of how acidic or basic a substance or solution is. pH is measured on a scale of 0 to 14. On this scale, a pH value of 7 is neutral, which means it ...
The meaning of PH is a measure of acidity and alkalinity of a solution that is a number on a scale on which a value of 7 represents neutrality and lower ...
ph(来源:chem.libretexts.org)
2023年1月29日 · The pH scale is logarithmic, meaning that an increase or decrease of an integer value changes the concentration by a tenfold. For example, a pH ...
ph(来源:pmel.noaa.gov)
What is commonly referred to as acidity is the concentration of hydrogen ions in an aqueous solution. The pH scale by numbers. Figure 1. The pH scale by ...