Soda And Mentos Experiment

The moment an Alka-Seltzer tablet hits water, it begins to fizz. These tablets are over-the-counter antacids and pain relief medications that contain aspirin, sodium bicarbonate, and citric acid. The fizzing is a result of a reaction occurring where carbon dioxide (in the form of bubbles), water, and sodium acetate is formed. The fizzing and carbon dioxide bubbles are a result of the sodium bicarbonate splitting and reacting with the citric acid. In this experiment we are determining the percent by mass of sodium bicarbonate (NaHCO3) in Alka-Seltzer tablets and exploring the relationship between amounts of reactants and products.

After analyzing and interpreting the data from the investigation, greater Alka-Seltzer tablet surface area (ex. whole tablet vs powdered tablet) most often led to higher reaction rates, measured in gas displacements (which also increased, refer to Table III). It was hypothesized that if an Alka-Seltzer tablet’s reaction rate is correspondent to its surface area, then gradually maximizing its surface area would consequently increase its rate of reaction, due to an increased number of exposed surface particles available to collide with the tap water, which would lead to a hypothesized 50% faster reaction. The hypothesis was correct to an extent - although the reaction rate did not speed up by 50% through each trial when halving the tablet (refer to Table I), it was proved that increased Alka-Seltzer surface area (by halving the tablet until eighths, then finely crushing the tablet) consequently increased reaction rate (measured in sec, ±0.5sec). This variable was measured through the amount of gas that was displaced during the experiment - which proved to be true as well; as surface area increased, the amount of gas displaced increased as well.

I am researching,”Does the type of soda effect the amount of fizz that comes out of a can with mentos” . According to “ Diet coke and mentos; Why the reaction” it says that the Ingredients in the mentos effect the reaction because inside the mentos it has Potassium Benzoate and aspartame. Mentos have Potassium Benzoate and Aspartame to make the soda fizz and the carbon inside the soda makes the fizz pack together and it tries escape the can. The bubbles inside the soda is carbon dioxide and when the carbon dioxide mixes with the mentos it causes the fizz to mount up and it escapes the can. The Potassium Benzoate and Aspartame reduces the amount of work required to form bubbles in the carbonated soda.

A rougher candy surface such as, Mentos, means there are more places for bubbles to grow, or more nucleation sites. (brilliant.org) Surfactants are compounds that lower the surface tension between two liquids. (brilliant.org) Dropping Mentos in Coke is an example of a surfactant. The eruptions happen due to nucleation where the Carbon Dioxide in the soda is drawn to the Mentos. (eepybird.com) The pressure of the bottle is trapping the CO2 inside. The CO2 in the soda reacts to the sugar on the Mentos.

In this experiment the scientists are looking for how gas production is effected when different sized Alka-Seltzer tablets are put into water. The independent variable is the different sizes while the dependent variable is the amount of gas produced. A constant variable includes the same brand of Alka-Seltzer tablets, the volume of water and same starting temperature. Finally the scientist’s control variable is the first trial testing the whole tablet comparing its reaction time to each new piece.

The reaction you will be investigating is the reaction that occurs when an Alka-Seltzer tablet is placed into a given amount of water. Alka-Seltzer is an over-the-counter antacid and pain relief medication that is dissolved in water before it is ingested. Each tablet contains aspirin (acetylsalicylic acid), citric acid, and sodium bicarbonate. As the tablet dissolves in water, the bicarbonate ions in the tablet react with the hydrogen ions from the acids that are also contained in the tablet. The carbon dioxide gas produced by the reaction is what causes the bubbling that can be observed.

The diet coke and Mentos experiment has been a favorite of amateur scientists, but how does it work? There have been debates, and scientists have concluded that the diet coke and Mentos is a physical reaction, called nucleation. Nucleation sites are areas that have high surface with low volume. Such places can be your fingerprint, scratches on glass, specks of dust, or even Mentos candy (Eepy Bird). Mentos candies have a pitted surface that’s rough when looked at through a microscope, therefore creating a wonderful place for nucleation to occur. Water molecules like to be next to other water molecules, so if you drop something into the soda, like Mentos, it acts as a site for growth of bubbles. Mentos have a high

I did see occasional bubbles, which could be due to the slight chemical reaction of the two chemicals. However, it was obviously not as strong as with the salt since the salt changed

When sodium carbonate was added to the separating funnel, effervescence occurred, inferring the release of carbon dioxide gas as a product of the neutralisation reaction. As the process continued, pressure built within the separating funnel, so it was vital to open the tap, after continuously inverting it.

The soda ash form experiment 3 was obtained. A 250 ml beaker was obtained and rinsed.

Does that affect the reaction? For example, say if you bought a 16.9 ounce Sprite. Just the fact that it has carbonation inside of it, doesn't mean that it will have the same reaction as a different type of soda. All bottles of soda can be manufactured differently. Because of the small capacity of a bottle. It may not compose a bigger reaction than a bottle larger than that. For example, a Sprite that has 2 liters. It contains everything that a regular Sprite bottle has, it's just much bigger. Because of the countless carbonated molecules inside of it. The reaction to this will be much bigger than the 12 ounce Sprite. So size does matter to determine the reaction of a liquid. (Elegant and Refreshing Beverages, written by Cambridge World history of food.)

gas bubbles serves as evidence that the catalase enzyme is working. As catalase is breaking the

Record the height of the bubbles in a table every minute until the stopwatch reaches 5 minutes.

Next, fifteen drops of potato juice were added to each test tube. Simultaneously, ten drops of Hydrogen Peroxide (H2O2) were added in all test tubes at the same time. All test tubes were gently shaken to mix the solutions and put to rest. After three minutes, the height of the bubbles of the three test tubes were measured at the same time. Then, the test tubes were exposed to different temperatures.

In this analysis of the factors that affect reaction rates, the purpose of the lab was to find the relationship between the change of surface area and reaction rate using Alka Seltzer tablets. In order to determine the connection between the surface area and reaction rate, the time it took for the reaction to finish was recorded for five different surface areas of the tablet. The ceasing of the production of bubbles and fizz and the complete dissolution of the tablet was established as the finished reaction. Water and the Alka Seltzer reacted to form Carbon Dioxide bubbles. As displayed in Graph 1, the relationship between surface area and reaction rate was represented by the positive slope and trend line. Through the data and results, it was concluded that as surface area increases, the rate of reaction also increases representing a direct relationship. The increase in the surface area created more contact and collisions, which increased the rate of the