One experiment titrates a 50.0 mL aqueous solution containing 2.500 g of an unknown base, RNH. base. This titration requires 59.90 mL of 0.925 M HCl to reach the equivalence point. A second experiment uses a 50.0 mL solution of the unknown base identical to what was used in the first experiment. To this solution is added 29.95 mL of 0.925 M HCl. The pH after the HCl addition is 10.77. a)       What is the molar mass of the unknown base? b)      What is Kb for the unknown base?

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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.