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A burette was filled with 50.00 ml of NaOH ans a titration was performed against an unknown acid dissolved in 100.00 ml of water which also contained 4 drops of phenolphthalein. Molarity of NaOH solution = 0.0925 M Initial volume in burette = 0.03 ml Volume used to reach the endpoint= 23.48 ml Grams of unknown acid used = 0.224 g pKa of the acid = 4.15 What was the gram equivalent weight of the acid?