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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 »

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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 »

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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 »

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High pKa refers to a weak acid. The strength of an acid refers to its ability to lose a proton. A strong acid has a low pKa whereas a weak acid has a high pKa. More »

www.reference.com Science Chemistry Acids & Bases

Several carboxylic acids exist with different pKa values. The simplest carboxylic acid, acetic acid, has a pKa value of 4.7. A carboxylic acid is an organic compound containing the functional group COOH. Additional carbo... More »

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The pKa for phosphoric acid is 2.15 for the first dissociation, 7.20 for the second dissociation and 12.35 for the third dissociation. These values are based on an ambient temperature of 25 degrees Celsius, and are known... More »

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The pKa of an amino acid depends upon its type, group and side chains. For example, when lysine is part of the carboxylic acid group, it has a pKa of 2.18, compared to a pKa of 8.95 when it is part of the amino group and... More »

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