Does Alka Seltzer To Dissolve

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.

After analyzing the data recorded during the experiment it can be seen that for the first two trials there was no change in temperature. For the last trial, the temperature dropped, the opposite of the hypothesis, by one degree from 21 to 20 degrees Celsius. So as can be seen when adding more Alka seltzer tablets by increments of one the temperature of vinegar will not rise during an Alka Seltzer and vinegar reaction thus proving the hypothesis false. Some sources of error in this experiment may have been when washing the beaker in between trials, the beaker may not have been completely dried and some water may have been in the vinegar which could affect the results of the reaction. Another error that may have occurred was when measuring the temperature of the reaction in some trials the tip of the thermometer was closer to that Alka Seltzer than in other trials.

It is estimated that a colder water temperature will decrease the total time that it takes for the Sodium Thiosulfate and Hydrochloric Acid solution to go murky making it opaque.

The manufacturer results shows that Alka-Seltzer has 1.9 grams per tablet. In the experiment the results are too small compared to the number that is given by the label. In the first run only .0588 grams reacted to the acid. That suggest that the tablet only contains 0.588 grams of sodium bicarbonate which is very different from the manufacturers. The second run gave an even smaller number of gram. In terms of moles only .0007 reacted in the first and third run and only .0006 in the second run. There are many factor that could had alter the amount of moles that reacted to the acid which affected the result in showing that there is a smaller composition of sodium bicarbonate in the tablet than that of the manufacturer’s.

If the temperature of the water increases, the dissolving time of the Alka-Seltzer tablet will decrease. This is because molecules of warmer water contain more energy than molecules of cooler water. The extra

2) Heat one to about 50˚C, and place other one in calorimeter (at around 20˚C)

How does the temperature affect the speed in which an Alka-Seltzer tablet fully dissolves in three cups filled with water with different temperatures.

The first two questions will be answered during the introduction of the lesson and the rest will be the laboratory analysis questions. These will get the students to analyze and make sense of their lab results.

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.

This is because as the temperature increases, the water molecules start moving faster and faster- which leads to more collisions between the water molecules and the Alka-Seltzer molecules. The Alka- Seltzer dissolved fastest in the 110° water. When dissolving, the Alka-Seltzer produced a white fizzing substance. When the Alka Seltzer dissolved in higher degrees, the Alka dissolved completely into water. However in the lower temperatures, the Alka Seltzer dissolved but left gas bubbles at the bottom of the beaker.

In this experiment, hydrochloric acids at different temperatures will be used to observe the effect of temperature in dissolving Alka Seltzer tablets. Four different temperatures as 25 degrees Celsius, 45 degrees Celsius, 65 degrees Celsius, and 85 degrees Celsius will be arranged before the experiment by using a heating pad. 25 degrees Celsius indicates the average room temperature and equal increases will be chosen to observe different responses of Alka seltzer to different temperatures.

· I set up the apparatus as shown in the diagram. I then placed a

Boil water, add ¼ teaspoon turmeric and let it boil for 10 minutes. When you let it cool and drink it, you’ve created a 12% solution.

Mix well. Turmeric will settle to the base of the glass, so you need to keep blending the water as you drink. By doing this, you get every advantages of the turmeric. You need to drink it while the water is still

You need very cold water, as cold as possible, so add more ice cubes to the water.