Calculate the [H+]and pH of a 0.000325M butanoic acid solution. Keep in mind that the Ka of butanoic acid is 1.52105. This is a problem that will require you to use the quadratic. Start by setting up the quadratic equation before using the quadratic formula and find the coefficients. Then, solve the quadratic. Quadratic formula: ax2+bx+c=0; enter the values of a,b, and c. a= b=