50.00 mL of benzoic acid (HC7H5O2) 0.1000 mol L-1 are titrated with NaOH 0.1000 mol L-1. Calculate the pH after addition of 0, 20, 50 and 100 mL of NaOH (Ka = 6.31 x 10-5). Generate the titration curve and choose the best indicator for this procedure. Note: possible answers are 2.60; 3.60; 4.20 and 8.45. Although there are the answers, show the calculations and generate the titration curve

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