Given $0\mathrm{.}1$ M solutions of acetic acid $($weak acid$)$ and sodium acetate $($weak base$),$ describe the preparation of $1$ L of $0\mathrm{.}1$ M acetate buffer at a pH of $5\mathrm{.}4.$ The pKa for acetate buffer is $4\mathrm{.}76.$ Use the Henderson Hasselbach equation.