The pH of a solution measures the amount of hydrogen ions that are in a solution. The term "pH" literally means "the power of hydrogen." The pH of a substance tells how acidic or basic a substance is. More »

Generally speaking, sugar is a pH-neutral substance, meaning that its pH value is around 7. However, raw and unprocessed sugar is slightly basic in nature, while white sugar and brown sugar are both slightly acidic. More »

A piece of pH indicator paper is used to gauge the acidity or alkalinity of a solution. Different types of pH indicator paper are used depending on the type of test and level of accuracy required, such as red or blue lit... More »

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Red cabbage juice is a good indicator of pH because it contains flavin, a pigment molecule that changes colors according to the concentration of hydrogen ions in a solution. The juice is prepared by soaking chopped red c... More »

By definition, pH is a measure of the hydrogen ions in an aqueous solution. As table salt, in its pure form, is not dissolved in water, it has no pH. More »

In chemistry, the main difference between pH and pKa is that pH tells the level of hydrogen ions in a certain medium while pKa value indicates the degree at which an acid dissociates or the side at which equilibrium is f... More »

A solution with a pH of 3 is considered acidic. It is roughly the same level of acidity as lemonade or an apple, according to the U.S. Environmental Protection Agency. More »