Enter your answer in the provided box. Find the pH of a buffer that consists of 0.31 M boric acid (H3BO3) and 0.36 M sodium borate (NaH2BO3). (pKa of boric acid

pH = 9.30

Explanation:

We can obtain the pH of a buffer using H-H equation:

pH = pKa + log [A⁻] / [HA]

Where pH is the pH of the solution,

pKa the pKa of the buffer (9.24 for boric acid)

[A⁻] the molarity of the conjugate base, NaH2BO3

[HA] molarity of the weak acid, H3BO3

Replacing:

pH = 9.24 + log [0.36M] / [0.31M]

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.