This material may consist of step-by-step explanations on how to solve a problem or examples of proper writing, including the use of citations, references, bibliographies, and formatting. This material is made available for the sole purpose of studying and learning - misuse is strictly forbidden.According to Henderson-Hesselbach equation:
pH = pKa + log [salt]/[base], substituting the values, we get:
7.2 = 7.55 + log (y/x)
Or, log (y/x) = -0.35...