A 12.0 mL sample of NH3 is titrated with 0.225 M HCI (aq). It takes 9.50 mL of HCI (aq) to reach the equivalence point. Answer the following questions to three significant figures. The pK for ammonia (NH3) is 4.75. What is the concentration of NH3 in the original solution? Enter a value accurate to three significant figures. Number M What is the pH at the equivalence point? Enter a value accurate to three significant figures. Number

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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.