# Lab Report-Determination of the Concentration of Hydrochloric Acid Solution

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Acid-Base Titrations Chemistry Quick Review of an Acid-Base Titration Calculation By Anne Marie Helmenstine, Ph.D., About.com Guide See More About: * titration * calculations * study sheets * acid-base reactions Ads Analytical InstrumentsGC, HPLC, LCMS, Microplate Readers Refurbished Laboratory Instrumentswww.conquerscientific.com Chemistry course in ukGet a Degree in Chemistry from a UK University. Free expert advice.www.click-courses.com/Chemistry Litmus paperRed, blue and neutral paper in books and reels manufactured in UKwww.johnsontestpapers.com Chemistry Ads * Chemistry com * Chemistry * Chemistry Help * Chemistry Experiments * Concentration Problem An acid-base titration is a neutralization reaction that is performed in the lab in order to determine an unknown concentration of acid or base. The moles of acid will equal the moles of base at the equivalence point. Here's how to perform the calculation to find your unknown. For example, if you are titrating hydrochloric acid with sodium hydroxide: HCl + NaOH → NaCl + H2O You can see from the equation there is a 1:1 molar ratio between HCl and NaOH. If you know that titrating 50.00 ml of an HCl solution requires 25.00 ml of 1.00 M NaOH, you can calculate the concentration of hydrochloric acid, [HCl]. Based on the molar ratio between HCl and NaOH you know that at the equivalence point: moles HCl = moles NaOH MHCl x volumeHCl = MNaOH x volumeNaOH MHCl = MNaOH x volumeNaOH / volumeHCl MHCl = 25.00 ml x 1.00 M / 50.00 ml MHCl = 0.50 M HCl Short Report Format Title: Acid Base Titrations-the percentage of acetic acid in vinegar By: A. Student, #990001 dd/mm/yy Lab Partner: M.Y. Partner Purpose: To use a quantitative titration method to determine the % of acetic acid in vinegar. Also to learn the concept of neutralization, moles, dilution, and stoichiometry as it applies to titration data.