Fda Vinegar Chemistry 1225 Lab

Throughout the course of the experiment, the weight of the beaker and liquid, the weight of the Alka-Seltzer tablet, the weight of the beaker with liquid plus the weight of the tablet, and the weight of the beaker with all of the contents after the bubbling ceased remained roughly constant and did not vary widely. However, a trend is able to be seen in Figure 1. It is clear that as the mL of vinegar used in each experiment run increased, the mass percent of NaHCO3 increased as well. During the construction of Figure 1, experiment runs four and six were deleted to create the expected graph which consists of a gradual increase and eventually leveling off into a plateau.

In this experiment, the precision of percent by mass of sodium carbonate was decent. It seemed to be consistent, although we seemed to have an outlier in our fifth trial. I believe this was due to human error of adding too much vinegar to this graduated cylinder. The accuracy of our results was decent in comparison to the rest of the class’s data, but our results were on the higher end compared to the averages of the class data, though not too high to be considered

was to determine the percentage by mass of acetic acid in vinegar using acid/base titration. The

Vinegar is a common household product, when mixed with the indicator, phenolphthalein, it turns pink. This indicates that Vinegar is acidic.

The purpose of the lab was met. The percent weight and concentration of acetic acid in the vinegar solution and its Ka, the concentration of phosphoric acid in the Unknown 86 container at each equivalent point, and each Ka value at each equivalent point are all listed below

In the letter, "Letter from Birmingham Jail" by Dr. Martin Luther King Jr., King wrote a letter in response to his clergymen and newspaper article on April 16, 1963. During this time, King was in jail for his "unwise and untimely" actions. However, King did not think that, instead, he thought that what he did was the right timing and the most reasonable thing to do. He believes that right now that they are living in a world full of injustice and he tries to persuade them that this should not be looked over. While writing his letter, King uses rhetorical devices and appeals to develop his argument that there is a need for change and that he is not an outsider.

Stoichiometry with Kitchen Chemistry By: Meena Roberts Discussion Section: Wednesday at 8:30 Objective: The purpose of the lab was to see how much carbon dioxide was produced in reaction. Procedure: Measured mass of balloon, mass of NaHCO3 and container, mass of container after NaHCO3 was removed, and mass of NaHCO3 in balloon on digital scale in grams(g).

Can red cabbage juice indicator be used to determine the strength of acids and bases? Explain.

Three grams of a mixture containing Benzoic Acid and Naphthalene was obtained and placed in 100 ml beaker and added 30 ml of ethyl acetate for dissolving the mixture. A small amount (1-2 drops) of this mixture was separated into a test tube. This test tube was covered and labelled as “M” (mixture). This was set to the side and used the following week for the second part of lab. The content in the beaker was then transferred into separatory funnel. 10 ml of 1 M NaOH added to the content and placed the stopper in the funnel. In the hood separatory funnel was gently shaken for approximately one minute and vent the air out for five seconds. We repeated the same process in the same manner one more time by adding 10ml of 1M NaOH.

The purpose of the lab is to determine the molar concentration of acidic acid in vinegar by titrating it with a solution of NaOH. The sodium hydroxide is a basic solution. When adding it to a acetic acid, a neutralization occurs. An indicator is added to the solution. The indicator is a dark pink color.

Experiment to investigate the amount of sodium hydroxide needed to neutralize the solution of vinegar

Materials and methods Materials • Vinegar • Baking soda • 9 10cm by 12cm paper towel squares • Film canister • Goggles • Ruler • Scissors • 5 mg measuring cup •

The vinegar consists of acetic acid and in the titration process, the acetic acid will be reacted with NaOH solution until all of the acetic acid is neutralized. Every trials used 5mL of vinegar solution. For the first trial, the percentage mass of acetic acid in vinegar is 5.0127% while in the second trial, it is calculated that there is 5.0119% of acetic acid in vinegar. In the third trial, the percentage of acetic acid in vinegar is higher than in the Trial 1 and Trial 2 which is 5.2396%. The average percentage mass of acetic acid in vinegar is 5.0881%.

For this experiment, we used three different types of vinegar (distilled white, white wine, and champagne) to test the acetic acid within each. Our experiment was aimed to test the amount of acetic acid within each type of vinegar and compare it to the amount listed on each bottle. Our research question was, what type of vinegar contains the most acetic acid? The phenolphthalein indicator turned a light pink color to indicate when the acidic solution turned neutral due to the addition of titrant. The goal of this experiment was to test the acetic acid within each bottle to see if our data matched the value listed on the bottle.

The purpose of this experiment was to determine how much KMnO4 was needed to titrate approximately 1 mL of an Unknow X101 concentrated solution of Oxalic Acid. A standardized KMnO4 solution was used on a known solution of Oxalic acid to help determine the unknown percent oxalic acid in unknown X101. The unknown sample for this experiment was sample x101 which theoretically was a % Oxalic Acid dehydrate sample but, the average of all three trials determined it to be a 6.7% percent Oxalic acid.