weak acid/ Strong titration questions

Question

Assume that there is half as much sodium hydroxide as acetic acid in a solution. Write the equation for this reaction( give the specific ratio between products and reactants) Is this a buffer solution?

Answer 1

NaOH(aq) + CH3COOH(aq) ==> CH3COONa(aq) + H2O(l)

..0....................1....................................1...............These are the ratios

So, the ratio of CH3COOH to CH3COONa is 1 : 1

Yes, this is a buffer and the pH will be equal to the pKa of CH3COOH because the ratio of the conjugate base (CH3COO-) to the weak acid (CH3COOH) is 1.