It takes 2.1 ml of 1.00M NaOH (aq) stock solution to reach the second equivalence point in a titration of 50.0mL of phosphoric acid solution. By what factor should you dilute the 1.0OM NAOH stock solution so that you will reach the first equivalence point in about 10mL?

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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.