A scientist needed to determine the concentration of a sodium hydroxide solution. To do this, they titrated 15.0 mL of the base against 0.350 M nitric acid. The titration was repeated multiple times to improve the accuracy. Determine the concentration of the sodium hydroxide solution. Choose the correct titration runs, and calculate the average titer of acid. (Enter your answer to four significant figures.) Average titer of acid ( mL Show/Hide Help Trial Run Titer Run 1 Titer Run 2 Titer Run 3 Titer Run 4 Titer 21.20 mL 20.15 mL 20.25 mL 19.15 mL 20.20 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.