Lab Report 22 Acids and Bases (Final)
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Faulkner University *
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1312
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Health Science
Date
Dec 6, 2023
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docx
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Acids and Bases: Analysis
Messiah I. Hayes
Department of Health Science, Faulkner University
Professor Mark Brenneman
May 1,2022
Abstract
This lab focuses heavily on titrating an acid with a base. During this lab, students used titration
with a standardized base to determine the amount of acetic acid within vinegar. Not all parts of
this lab experiment were completed. Some students completed Part A only while others were
responsible for Part B only. The results for this lab showed that the moles of NaOH is equal to
the moles of acetic acid, which is 0.004394, 0.004524, 0.005031. The average molarity of acetic
acid was found to be equal to the molarity of NaOH which is 0.26M. This titration lab required a
delicate touch with the buret.
Introduction
It’s always strange noticing chemistry in modern society. The concepts learned
throughout the semester become more visible and comprehendible at the grocery store. Wine is
beverage that once gone bad is sour to the taste. The sourness is due to the presence of acetic
acid. This acid after formic acid, is the second simplest carboxylic acid. Acetic acid is also a
presence in other liquid substances found at the neighborhood Publix. One of those substances
being vinegar. About 4% of acetic acid is found within vinegar which makes it one of the main
components in it excluding water and other trace elements. It has been made known that vinegar
is mostly diluted acetic acid produced by the oxidation of ethanol and fermentation.
Being that vinegar is a dilute solution of acetic acid, a base must be used in titration.
Sodium hydroxide is used to neutralize the acid, because of its strong basic nature. Sodium
hydroxide dissociates within water to form ions. In order to find the concentration of an acidic
solution, one must titrate the acidic solution with a basic solution. Scientists use titrations to
detect the equivalence point. This is the point is when equal amounts of reactants have been
mixed.
In this lab experiment the technique of titration is heavily involved. This technique was
cultivated in previous labs and a relief to execute correctly. Titration has happened when the
clear solution has undergone a chemical reaction changing to a pinkish purple color. For the most
precise numbers, a student strives to catch the reaction at the earliest sign of change. The lighter
the shade of pink, the more sooner the change is registered. Another technique that was is in the
lab experiment was using the buret. This tool was used in previous labs before lab #22, so it
wasn’t difficult to use in this lab setting.
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