One liter of 0.1M phosphate buffer with pH 2.0 was prepared using 3M H3PO4 and salt NaH2PO4 (FW=142 g/mol). How many ml of 3M H3PO4 was used in the preparation? pKa of phosphoric acid: 2.0, 7.0, 12.5 O 10.0 ml 8.33 ml O 16.66 ml O 15.0 ml

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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.