The pH scale is a measurement of the acidity or basicity of a substance in a solution. It is a logarithmic scale based on the concentration of hydrogen ions in solution. Hence, pH stands for "power of hydrogen".
The pH scale is, as previously mentioned, an inverse logarithm and ranges from 0 to 14 (Figure 1). Anything below 7.0 (ranging from 0.0 to 6.9) is acidic, and anything above 7.0 (from 7.1 to 14.0) is alkaline. Extremes in pH in either direction from 7.0 are usually considered ...
pH measurement is an important parameter in nearly every water quality application. In environmental sampling and monitoring, high or low pH values can be indicative of pollution. To determine the pH of water, a pH meter can be used to measure this impor
The following is the pH equation used to find the power of the hydrogen concentration ion and calculate pH of a solution: pH= -logH3O^+ This formula is needed when finding pH by using the given information of hydronium ion concentration. How do you calculate pH given molarity? When stud...
Learning practice - use what you know to answer questions about basic pH levels and an example of a substance that is very acidic Additional Learning You'll have the chance to learn more with the accompanying lesson called pH Scale Lesson for Kids: Definition & Facts. Follow along with thes...
So, the pH scale ranks the acidity of a solution. What Is pKa? Now that we have an answer to “what is pH?” let’s move on to pKa. pKa is the measurement of acidity or basicity of achemicalorfunctional group. The acidity or basicity of a chemical or functional group can be defin...
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The last is a decimal logarithmic scale (dimensionless). Mathematically, it is quite clear that the argument of the logarithmic function should be taken as dimensionless, just as for that of its inverse exponential function. Hence we may consistently write: pH = - log10(|[H3O+]|) = - log...
This pH scale ranges from 0 to 14, packed with insight about the nature of the test sample. Most commonly, pH and water are discussed together since pure water is the poster boy with a neutral pH of 7 (middle-point on the scale). As the ion concentration increases, an acid is ...
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