buffer solution is prepared by dissolving 1.50 g each of benzoic acid, HC7H5O2, and sodium benzoate, NaC7H5O2, in 150.0 mL of solution. (MM of benzoic acid=122.22g/mol, sodium benzoate=144.11g/mol) Ka=6.3x10-5 What is the pH of this buffer solution? Which buffer component must be added, and in what quantity, to change the buffer pH to 4.00? What quantity of 2.0 M NaOH or 2.0 M HCl must be added to the original buffer to change the pH to 4.00?

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Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.