Calculate the ph for a 0.3 m solution of (a) sodium leucinate

To get the pH value for a certain aqueous solution, the concentration of the hydronium ions (in moles per liter) should be know. This concentration is also known as the "molarity".

pH = - log [H3O+]

We are given that the molarity = 0.3 m

Therefore,

pH = - log[0.3] = 0.5228787