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 »

The equation pH = pKa + log is known as the Henderson-Hasselbach equation. In chemistry this equation is often used to prepare buffers in laboratory settings with the availability of weak acids. Weak acids that don't com... More »

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The term "pKa" is a measure of the strength of an acid in solution. It is defined as the negative base 10 log of the acid dissociation constant. A lower pKa value indicates a stronger acid. More »

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When the pH of a solution is equal to the pKa, the buffer is in its most effective state. In this state, the concentration of the conjugate base is equal to that of the acid, allowing it to effectively neutralize added s... More »

A neutral pH level is a value of seven on the pH scale. This number lies at the center of the scale and is the value that is associated with pure water. A pH level below or above seven indicates that the liquid is either... More »

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 »

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 »

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