Titration Lab Write Up
Abstract The purpose of this experiment is to determine the concentration of acetic acid in vinegar by using 0.1 M HCl and NaOH solution. By performing three titrations to determine the concentration of the base, the concentration of the acid was determined to be 0.600 M. It was possible to determine its concentration by standardizing the sodium hydroxide solution used for the first three titrations and by using phenolphthalein to indicate its equivalence point. In conclusion, although there were sources of error, the hypothesis was proven correct by the efficiency of the procedures and the accuracy of the results obtained.
Introduction In chemistry, titration is a common laboratory technique that is used to determine the concentration of a substance in a solution. It is performed by neutralizing the solution with the same volume of either an acid or base with a known concentration. (“Titration.” American Heritage Science Dictionary. 2010) Once the neutralization is complete, the concentration is determined by using the formula MAVA = MBVB. The basis of this process is that there are three known values and one unknown value. However, how is the concentration of a substance in a solution determined when there is another unknown value? An experiment was created with the purpose of answering this question by performing three titrations to obtain the value of one unknown concentration and using this value to determine the concentration of the acid used.
Hypothesis If three titrations are performed using 0.1 M HCl and NaOH solution to obtain the molarity of the base, then this information can be used because by titrating the vinegar with the now known concentrated base, the concentration of the acetic acid can be determined.
Materials and Methods All materials were gathered including a buret, graduated cylinder, stopcock, phenolphthalein, an Erlenmeyer flask, sodium hydroxide solution and hydrochloric solution. The buret and graduated cylinder were
Introduction In chemistry, titration is a common laboratory technique that is used to determine the concentration of a substance in a solution. It is performed by neutralizing the solution with the same volume of either an acid or base with a known concentration. (“Titration.” American Heritage Science Dictionary. 2010) Once the neutralization is complete, the concentration is determined by using the formula MAVA = MBVB. The basis of this process is that there are three known values and one unknown value. However, how is the concentration of a substance in a solution determined when there is another unknown value? An experiment was created with the purpose of answering this question by performing three titrations to obtain the value of one unknown concentration and using this value to determine the concentration of the acid used.
Hypothesis If three titrations are performed using 0.1 M HCl and NaOH solution to obtain the molarity of the base, then this information can be used because by titrating the vinegar with the now known concentrated base, the concentration of the acetic acid can be determined.
Materials and Methods All materials were gathered including a buret, graduated cylinder, stopcock, phenolphthalein, an Erlenmeyer flask, sodium hydroxide solution and hydrochloric solution. The buret and graduated cylinder were