In our lab we took 25mL of a solution contaning .875g of Ca(OH)2 and 2.2655g of CaCl 2H2O and titrated it with .04042M HCl. The mean titrated value was 2.02mL +- .1258mL. How do I Calculate the hydroxide concentration in the solution? If more info is needed I can supply it.

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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.