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 »

Amino acids are biologically organic compounds that are merged together to form proteins. Together, these combinations are the building blocks of life. There are about 20 amino acids, eight of which are considered essent... More » Science Biology

Amino acids are used in the human body to make proteins which help the body grow, repair body tissue and break down food. Amino acids help with muscle control, build muscle tissue and protect the body’s nervous system. T... More »

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 »

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 »

The pKa of benzoic acid is equal to approximately 4.20. The pKa value is a measure of the acidity of a substance, with lower values indicating a stronger acid. More » Science Chemistry Acids & Bases

The pKa of sulfuric acid is -3. This value corresponds to a Ka of 1.0 x 10^3 as the pKa is the negative logarithm of the Ka value. Sulfuric acid is considered a strong acid because the Ka is larger than 1. More »