List weak acidconjugate base pairs that you could use to pre

List weak acid/conjugate base pairs that you could use to prepare buffers with the following pH values by mixing equal moles of the acid and base in T Lifer of water. For each one, list the formulas for the acid and the base. Cite your source(s) using APA format. a. pH-1.96 b, pH = 3.39 C. pH = 8.70 d, pH = 9.21

Solution

Equal moles of acid and base is used inthe preparation of buffer, the PH of the resulting buffer is equal to Pka of weak acid.

PH= Pka + log[salt]/[acid]

number of moles of acid = number of moles of salt

the lof[salt]/[acid] = 0

PH= Pka.

Pka of 1.96 is HClO

By mixing the weak acid HClO and its conjugate base ClO- then to preapare the PH= 1.96

Pka of 3.39 is HNO2

By mixing the weak acid HNO2 and its conjugate base NO2- then to preapare the PH= 3.39

Pka of 8.70 is HBrO

by mixing the weak acid HBro and its conjugate base BrO- then to prepare the PH= 8.70

Pka of 9.21 is HCN

by mixing the weakacid HCN and its conjugate base CN- then to preapare the PH= 9.21