At ph of 12 what charged groups would be present on glycine
I said a NH2 and coo-
Answered with some reluctance above.
To determine the charged groups present on glycine at a pH of 12, we need to consider the pKa values of its functional groups. Glycine, which is an amino acid, has two functional groups: a carboxyl group (COOH) and an amino group (NH2).
At a pH of 12, the solution is highly basic, meaning that it has a high concentration of hydroxide ions (OH-). In this alkaline environment, the amino group (NH2) of glycine would become protonated, gaining a hydrogen ion (H+) to form the positively charged amino group (NH3+).
On the other hand, the carboxyl group (COOH) of glycine would undergo deprotonation in a basic solution. It loses a hydrogen ion (H+) to form the negatively charged carboxylate group (COO-).
So, at a pH of 12, glycine would have a positively charged amino group (NH3+) and a negatively charged carboxylate group (COO-).