Alka Seltzer Lab Report Results

Prepare timer to start at the exact time the Alka Seltzer is dropped into the beaker of water.

Our testable question was, what is the effect of different liquids on the dissolving rate of the alka seltzer. To answer this question we dissolved alka seltzer in three different liquids, and recorded the data we found. After testing water three times

In this lab we tested how changing the content of the water affects the speed of the alka seltzer dissolving. My hypothesis was that the tap water would dissolve the tablet fastest, the salt water would be second fastest, and the sugar water would be the slowest. I was correct that the tap water would dissolve the fastest, but I was wrong in that the salt water would dissolve faster than the sugar water. I think that our results came out the way they did because of the amount of sugar and salt we put into the water. When we put the sugar and salt into the beakers, we came up with those measurements on the spot. After the salt and sugar had been added, the salt water was very cloudy, but you could barely tell the tap water from the sugar water.

The purpose of the experiment was to investigate the effect of the temperature of the water on the reaction of the tablet. There was a difference between the tablet in the cold water and the tablet in warm water. The tablet in cold water took 32.17 seconds to completely dissolve, and it took the tablet in warm water 26.67 seconds to completely dissolve. The hypothesis is that if one puts a tablet in cold water and one in warm water, then the water in cold water will take a longer time to dissolve and the tablet in the warm water will dissolve faster was supported. I got this result because the added energy in the hot water causes water molecules to move faster which make the tablet dissolve faster, and the tablet in colder water took a longer time because the cold water is condensed. This experiment relied on the temperature of the water how cold and how hot the water is. Perhaps this experiment could be improved by seeing the temperature of the water and how

This Lab Report is an analysis of the results of a two-part experiment. In the first part, we used a gel filtration column to separate the components of a mixture composed of protein and non-protein molecules. By doing so we hoped to obtain fractions that contained single components of the mixture, while also gaining insight into the relative molecular weight of each component compared to each other. We would then plot these fractions onto nitrocellulose paper in order to determine which fractions had protein. In the second part, we would use the fractions which we had determined had protein to conduct an SDS-PAGE. By doing so we hoped to determine an estimate on the molecular weight of the proteins present in each fraction by comparing it to a tracker dye composed of a variety of molecules of differing molecular weight.

An instant cold pack is a device which is composed of 2 sacks, one which contains water, and the other with another chemical. When the user wishes to activate the cold pack, she squeezes it, and breaks the boundary between the water and the chemical. This causes an endothermic reaction as the water dissolves the chemical. The reaction then lowers the pack’s temperature by absorbing heat from the surroundings. Cold packs typically utilize the chemicals ammonium nitrate, calcium ammonium nitrate, or urea. A cold pack using ammonium nitrate will typically hit a low of 1.67℃ for 10 to 15 minutes. However, for the purposes of the first portion of the experiment, the chemicals being tested were ammonium chloride, sodium chloride, and calcium

I believe that the ½ cup with the Alka seltzer will dissolve quicker than the 1 cup of water. It will have a higher concentration of Alka seltzer to water than the 1 cup.

In Part C of the experiment, the process completed in Part B was performed again on the six Kool-Aid drink samples: black cherry, cherry limeade, grape, mixed berry, strawberry, and tropical punch. The cherry limeade, grape, mixed berry, and tropical punch samples were undiluted stock solutions that were used in the SpectroVis. The black cherry solution was diluted with a 2-fold dilution. The 3 mL of black cherry solution was diluted with 3 mL of deionized water. This was done because the Red 40 dye was too concentrated. The strawberry solution was first diluted by a 2-fold but the absorbances values were too high and fell outside the acceptable range of 0-1. Therefore, 8 mL of strawberry solution was diluted with 12 mL of deionized water. These values for all of the solutions were recorded in Table 5. The solutions were emptied down the sink. All the glassware and cuvettes were rinsed with deionized water and dried. The volumetric flasks and caps were returned to the appropriate containers.

Ever wonder about the chemical makeup of tablets that people take for pain relief? Before a tablet can be successfully made, the limiting and excess reactants must be considered. The limiting reactant will affect the amount of the product that can be made. Another reason why the starting reactants must be determined carefully is to make reduce the amount of the reactant in excess so that reactants are not wasted. This experiment uses an Alka-Seltzer tablet. Alka-Seltzer dissolves in water and is an antacid and a pain reliever1. The Alka-Seltzer tablet has many uses such as relief of headaches, ingestion, heart burns, or even upset stomachs2. The active ingredients in an Alka-Seltzer tablet is aspirin, also known as acetyl-salicylic acid (C8H12O4), citric acid (C6H8O7), and sodium bicarbonate (NaHCO3)2. The aspirin in the Alka-Seltzer tablet helps with pain relief. Because of the acid-base chemistry (Brønsted-Lowry), citric acid and sodium bicarbonate produce O2, which makes the tablet fizz when it is dropped in liquid. The Brønsted-Lowry theory shows how the Brønsted-Lowry acid donates a hydrogen ion while the Brønsted-Lowry base accepts the hydrogen ions3. The remaining NaHCO3 that is in excess post reaction with the citric acid is what is used to neutralize stomach acid which helps relief heart burn2. The problem in

Since Alka Seltzer is swallowed and reacts with stomach acid, the vinegar is in this experiment is substituting as the stomach acid. The principle of limiting reagents relates to this lab because

The proof (twice the % alcohol) starts at its maximum and goes down (as the alcohol evaporates). If we start with a high concentration of alcohol, we will get the azeotrope (95% alcohol, 5% water) for a while, then the concentration will decrease.

The results collected based on this experiment were to some degree surprising. I was surprised about the length of time it took for the beaker containing the cold water and Alka Seltzer tablet to dissolve. I predicted it would dissolve the slowest, however taking less time than it actually did, 2 minutes 43 seconds. I didn’t think it would take longer than 2 minutes for the Alka Seltzer tablet to dissolve. I wasn’t however surprised that the beaker containing hot water dissolved the tablet the fastest, as I had learnt that an increase in temperature increased the rate of

Alka Seltzer is a medical drug used for pain relief and used for relieving indigestion. For example, if you have a stomachache or some indigestion problems, Alka Seltzer may help neutralize the stomach acidity. Not only that, Alka Seltzer is also used for cleaning household items, such as vases or jewelry. Alka Seltzer contains citric acid and sodium bicarbonate, which makes it dissolve and release carbon dioxide gas when dropped in water. In this experiment, my lab partner, Rebecca, and I are trying to find a way to make Alka Seltzer dissolve faster in water. Rebecca and I both decide that if we increase the temperature of the water or make the water hotter, then the Alka Seltzer will dissolve faster because I know when salt and sugar dissolve in hot water, they dissolve faster. I predict that this same result would apply to this experiment.

The advertisement our group decided to redesign was for Alka-Seltzer Plus Day-Time Liquid Gels, free of preservatives and artificial dyes. We decided to redesign this commercial because it has a legal issue and many ethical issues that can be easily fixed. The ad appears here: https://www.ispot.tv/ad/AE8M/alka-seltzer-plus-liquid-gels-powerful-relief.

Results: My results is the when in put the alka-seltzer inside the bottle and the water was rising up