I have a question about finding the equilibrium. My question given was to calculate the hydroxide ion concentration in your solution from the pH at equilibrium. My first question is how do I find the pH at the initial equilibrium condition. I did an experiment and added drops of NaOH in ten drop increments. 0 drops pH 1.16, 10 drops pH 1.20, 20 drops pH 1.25, 30 drops pH 1.30, 40 drops pH 1.37, 50 drops pH 1.43. Thanks!