(Solved): Use the \( \mathrm{pKa} \mathrm{pKb} \) sheet from the Introduction to Acids and Bases module to f ...

Use the \( \mathrm{pKa} \mathrm{pKb} \) sheet from the Introduction to Acids and Bases module to find the required reference values. If a buffer is made by mixing an \( \mathrm{HCl} \) solution with a \( \mathrm{Na}_{2} \mathrm{HPO}_{4} \) solution, what would the \( \mathrm{pKa} \) of the buffer be? Your answer must be entered with 2 decimal places or it will be incorrect.