HND Biomedical Sciences Lab Report Essays

HND Biomedical Sciences Lab Report Essays HND Biomedical Sciences Lab Report Essay HND Biomedical Sciences Lab Report Essay Determination of the concentration of ethnic acid in commercial vinegar Introduction: The alma of the experiment was to determine the militarily of ethnic acid In table vinegar by titrating a sample with alkali sodium hydroxide (Noah) with a known concentration of 0. 1 moll-1. The equation of the reaction between ethnic acid and sodium hydroxide is as follows: COACH + Noah Cinchona + H2O When the iterations end point is determined and volumes of reactants are measured the concentration of the ethnic acid can be calculated. Keywords: Titration, Sodium Hydroxide, Ethnic Acid, Equivalence Point, pH Meter, Method: The titration was successful at working out the concentration of ethnic acid. The equivalency point was 14. CACM Noah used and the pH at the equivalency point was 7. 5. The last recorded pH was 12 because when sodium ethanol is dissolved in water it dissociates to become sodium and ethanol ions. Because ethnic acid is a weak acid the ethanol ions react considerably with the hydrogen ions in the water to produce ethnic acid molecules. Sodium hydroxide is a strong base meaning that the sodium ions only react slightly with the hydroxide ions leaving more hydroxide ions in the solution resulting in an alkaline solution.