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ph 音標拼音: [p'i'etʃ]

n. ph值

ph值

WordNet (r) 3.0 (2006) (WordNet)

pH
n 1: (from potential of Hydrogen) the logarithm of the
reciprocal of hydrogen-ion concentration in gram atoms per
liter; provides a measure on a scale from 0 to 14 of the
acidity or alkalinity of a solution (where 7 is neutral and
greater than 7 is more basic and less than 7 is more
acidic); [synonym: {pH}, {pH scale}]

The Free On-line Dictionary of Computing (foldoc)

The {country code} for the Philippines.

(1999-01-27)

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英文字典中文字典相關資料:

pH - Wikipedia
In chemistry, pH ( piːˈheɪtʃ or piːˈeɪtʃ ; pee-AYCH) is a logarithmic scale used to specify the acidity or basicity of aqueous solutions Acidic solutions (solutions with higher concentrations of hydrogen (H+) cations) are measured to have lower pH values than basic or alkaline solutions
What Is pH? - Definition, Uses, Facts - Science Notes and Projects
pH measures the concentration of hydrogen ions (H⁺) in a solution and indicates whether a solution is acidic, neutral, or basic The pH scale typically ranges from 0 to 14, where 7 is neutral, values below 7 are acidic, and values above 7 are basic (alkaline)
PH | Definition, Scale, Uses, Examples, Facts | Britannica
A pH value is the 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 into numbers between 0 and 14
Understanding the pH Scale: Definitions, Calculations, and Concepts
Explore the meaning of pH and how it relates to acidity and basicity Learn how to calculate pH, pOH, [H₃O⁺], and [OH⁻], and understand what pH tells you about a solution
What Is pH and What Does It Measure? - ThoughtCo
pH is a measure of how acidic or basic a solution is, from 0 to 14 pH is important for chemical reactions in areas like medicine, cooking, and agriculture Scientists use pH meters and indicators to measure the pH of solutions accurately
What is pH? The pH Formula Equation - ChemTalk
This article explains the concept of pH, how to find and calculate the pH, and how the pH formula and pH equation are used in chemistry!
pH Scale: Definition, Chart, Values, Range - Chemistry Learner
pH is a scale used to measure the acidity or basicity of a solution It ranges from 0 to 14 and reflects the relative concentration of hydrogen ions (H⁺) and hydroxide ions (OH⁻) in aqueous solutions
Why do we measure pH? - U. S. Environmental Protection Agency
pH is an important indicator of chemical, physical, and biological changes in a waterbody and plays a critical role in chemical processes in natural waters pH values are on a scale from 0 to 14, with 7 0 considered neutral
A primer on pH - NOAA Pacific Marine Environmental Laboratory (PMEL)
pH values above 7 are commonly referred to as “basic” (or “alkaline”) These common terms engender confusion, because a pH value does not directly reflect a quantitative measure of the concentration of bases in the solution, nor do high pH values constitute a measure of alkalinity
pH Scale - pH | Dilution | Concentration - PhET Interactive Simulations
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

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