How do you prepare 10mM of Hac-NaAc stock solution?

To prepare a 10 mM HAc-NaAc (sodium acetate) stock solution, first calculate the required amounts of acetic acid (HAc) and sodium acetate (NaAc) based on the desired final volume. For example, to make 1 liter of a 10 mM solution, you would need 0.01 moles of each compound, which translates to 0.6 grams of sodium acetate (NaAc) and 0.6 mL of acetic acid (HAc), assuming pure acetic acid. Dissolve the sodium acetate in a suitable volume of distilled water, then add the acetic acid, and finally adjust the volume to 1 liter with distilled water. Make sure to mix thoroughly and check the pH if necessary.