Molar Concentration Of Sodium Hydroxide Solution

Abstract: The purpose of this experiment was to prepare and standardize a sodium hydroxide solution as well as determine the molar concentration in as strong acid and the percent by mass of acetic acid in vinegar. We used volumetric analysis, also known as titration, in both experiments. The average molar concentration for NaOH was 0.2749 mol/L while the average molar concentration of the acid solution was .2493 mol/L.The average percent by mass of acetic acid in vinegar was found to be 12.3 %
Introduction:
The Purpose of experiment 9 was to prepare and standardize a sodium hydroxide solution as well as determine the molar concentration of a strong acid. The purpose of experiment 10 was to use what we learn in experiment 9 in order to determine the percent by mass of acetic acid in vinegar. Learning Volumetric Analysis is important and relevant to science because it helps determine concentrations of unknown substances. Due to the fact that sodium hydroxide is extremely hygroscopic, as a solid it mass cannot be measured with a primary standard solution also known as an accurate molar concentration. To solve this we have to standardize the Sodium hydroxide solution with an acid. In order to determine the molar concentration of …show more content…
This resulted in the average molar concentrations of NaOH (mol/L) being 0.2749mol/L.The molar concentration of the strong acid solution was 0.2435 mol/L and 0.2551 mol/L. Making the average molar concentration 0.2493 mol/L.Lastly, the percent by mass of acetic acid in our unknown vinegar was determined to be 11.8% and 12.8%. Resulting in the average percent by mass of acetic acid in our unknown vinegar harry to by 12.3%.There were minimum errors during the experiment which could have been caused by measurement that was slightly incorrect. However, the accuracy and precision of the measurements were to a reproducible