3. An unopened can of Coke or Pepsi will sink when put in water. An unopened can of Diet-Coke and Diet-Pepsi will float. Try the experiment to verify the assertion. Explain the phenomenon.
In Pennsylvania Pepsi files off the self in the local Wal-mart and grocery stores. Pepsi was introduced in 1890’s but was not trademarked until 1903 and it has medical claims like to cure stomach problems. Pepsi is concentrated at first then water is added. Coca-cola was introduced in 1886 as a patent medicine. It claimed to cure whatever bothered you such as an addition to morphine, headaches, and impotence as well as more.
This is called the shaking and venting procedure. This procedure allows the benzoic acid (benzoic is the solute) to establish an equilibrium between the two layers the organic layer and the aqueous layer. Benzoic acid, although it has dissolve in water, is not very soluble in water (it will only dissolve in water at elevated temperature). However, benzoic acid is more soluble in methylene chloride. That is why once you add the benzoic acid aqueous solution and the CH2Cl2 in the separatory funnel the benzoic acid moves from the aqueous layer into the methylene chloride organic layer.
Testing the reaction rate of fermentation based on alterations in ph solutions. Emily Anderson Abstract The experiment was conducted to determine what effect different ph solutions would have on the reaction rate of yeast fermentation. It was hypothesized that, the more acidic a ph solution, the slower the reaction rate would be in fermentation process. The reaction rate was judged by the amount of co2 displacent formed in the top of the fermentation tubes every five minutes for twenty minutes intervols. Introduction When the oxygen supply runs short in heavy or prolonged exercise, muscles obtain most of their energy from anaerobic process called glycolysis.
Will soft drinks dissolve a steel nail? By: Alexis Arms Abstract Is a can of soda strong enough to dissolve a steel nail in only four days? The purpose of this experiment is to test whether phosphoric acid, found in soda, can dissolve a nail or if it’s just a fictitious story. The reason I was interested in this topic is because my father once told me that the phosphoric acid in a can of soda was strong enough to dissolve a steel nail. I searched for answers on the internet but found out that people were on both sides of the fence.
By using TLC and IR spectrum, we will see the difference between benzophenone (starting material) and diphenylmethanol (final product). Experimental Procedure: Benzophenone (358mg, 2.0mmol) was dissolved in ethanol (5ml) in a 25ml round bottomed flask. The solid did not completely dissolve, so the flask was swirled with magnetic stirrer bar. In a small test tube, sodium borohydride (87mg, 2.2mmol) was dissolved in cold water (1.5ml). This solution was added drop wise to the stirred ethanolic solution of benzophenone at room temperature.
Materials and Methods In this experiment, an aluminum can was reacted in order to form potassium aluminum sulfate, or rather, alum. Aluminum cans have a thin coating of plastic on the inside that is surrounded by a thin coating of paint on the outside. In order to get just aluminum, the paint had to be removed. A 250 mL beaker was weighed and the weight was recorded. Scraps of aluminum can weighing between 0.9 to 1.2 grams was then placed inside of the beaker and the beaker with the pieces of can was weighed again in order to obtain the mass of the aluminum can pieces.
As for endothermic the reactions pulls in energy and makes it cold to touch. The other experiment measured the pH level in the reaction. The reaction consisted of sodium hydroxide and hydrochloric acid also to see at which point the reaction becomes neutralized. Neutralization is a reaction between an acid and a base forming a salt and water even tho you can’t see the salt due to the salt dissolving into the solution and the pH level of the reaction around level 7 and has a green sometimes yellow colour when the universal indicator is added. The neutralization gap shows how small the gap is to make the reaction neutral.
Steps in the Mentos in Pop Experiment Soda and Mentos Volcano This is the classic experiment. It requires a couple Mentos and a 2-liter bottle of soda. Directions: Remove the lid from the bottle and the paper and foil wrappers from the Mentos. Drop a couple Mentos into the bottle. This will cause the "eruption" and you should see a 3- or 4-foot plume of bubbly cola.
They were glucose, water, lemon juice, Coca Cola, egg batter, lemon-lime soda, diet lemon-lime soda, Kraft Italian dressing, skim milk and butter. The positive control was the glucose and the negative control was the water. Twenty drops of each sample of substance was added to the test tubes (in all there were 10 test tubes). After the solutions were added in their own test tube, 20 drops of Benedict’s reagent was added. Each individual test tube was placed in boiling water and removed after 5 minutes to test if