Chemical Reactions Lab Report

6. Carefully drop the two Alka-Seltzer® tablets into the vinegar

How is temperature related to this reaction? The higher the temperature the slower they move.

If I had a chance to do this experiment once again. I would improve this experiment by actually testing, whether temperature affects the rate of reaction of the alka seltzer tablet, by having the water be hot, warm and cold, and determine at which temperate does the tablet dissolve faster. I could also change the amount of water I used during the experiment, as I only used 100ml of water in a 400ml beaker. I would also change the temperate of the room. A further investigation can study how temperature affects the rate of reaction between water and alka seltzer tablets.

Introduction Alka-Seltzer has been on the market since 1931 and has helped to relieve indigestion and upset stomach. The tablets began to fizz and bubble when dropped into water. “The fizziness happens when baking soda (sodium bicarbonate) and citric acid react chemically in water. They yield sodium citrate, water and carbon dioxide gas, which causes bubbles.” Based on this information, we will measure the reaction time of AlKa- Seltzer dissolved in 200 ml of water at 3 different tempertures in the first portion of this experiment.

Each tablet of Up and Up and Tums has enough antacid to neutralize 0.02 moles of

A possible reason that such a low percent recovery was obtained was most likely due to evaporating too much of the solvent out when it was lodged into the warm water bath. However, the most likely reason that a low percent recovery was obtained is because the unknown was purified of everything except the API. Meaning that, the API only made up approximately 10.4% of the pill. Table 2 represents the melting point of unknown B, which was found to be acetyl salicylic acid. According to Chemicalbook, the melting point of acetyl salicylic acid is 134-136°C.

The first step was to buy a 2L bottle. After that, all of the liquid inside of the bottle had to be emptied, and the plastic labels on the outside, if any, had to be removed. Then, the bottle had to be filled to the very top with water. After completing this, the Plastic Pipet had to have the metal nut attached to it, and the Pipet had to be filled almost to the top with water. Then, an empty glass or cup had to be completely filled with water, and the Pipet had to be placed in it.

Lay bag down and add about 5mL of water into the bag. Then quickly lift the bag and put substances in corner of bag. Then observe 3.Reference procedure one for and first and second step. After first step put the two substances into one corner of bag then observe.

The small rectangles on the paper correspond to the wells in the gel. Number the wells on the paper from #1 at the top to #6 at the bottom. 4. Gently slide a gel from a zipper-lock bag into the casting tray and between the end dams. Remove the end dams.

Tube 1 had 1 drop, tube 2 had 2, and each tube after had an additional drop until tube 5. Next, deionized water was placed in each tube. Tube one had 4 drops; tube 2 had 3 drops and the pattern continued until tube 5. After each tube was filled with the glucose and deionized water, the contents were mixed and centrifuged. After the tubes were centrifuged, any pellets formed during the process were removed.

We put different amounts of hydrogen peroxide in a graduated cylinder (5, 10, 15, 20 ,25) ml. We add food dye/ food coloring and dish soap into the hydrogen peroxide. We mix the mixture inside the graduated cylinder.

Fill the well with 90ml dh20 to reach 100ml. move 10 ml of the second well to the third well. FIll the third with another 90ml dh20 to reach 100ml. Move 10 ml of the third well to the fourth well. Fill the fourth well with 90ml dh20 to reach 100ml.

Problem: How does the temperature of water used to dissolve an Alka-Seltzer tablet affect the amount of time it would take for the tablet to completely dissolve? An Alka-Seltzer tablet is a medicine tablet made with baking soda used as a pain reliever for “headaches, body aches, pain, heartburn, acid indigestion, and sour stomach” (Alka-Seltzer Tablets). It is put into water, left to dissolve and then consumed. When an Alka-Seltzer tablet is dropped into h20, a chemical reaction immediately takes place and produces bubbles made out of carbon dioxide as a product of the collision (Olson 2). When in its original powder (dry) form, the Alka-Seltzer’s two main ingredients: citric acid and sodium bicarbonate are just there and not reacting to each

The Problem: How does temperature affect the dissolving time of an antacid tablet? Antacid tablets are medicines that help neutralize the acid in your stomach. Antacid tablets are made of numerous numbers of components, such as sodium bicarbonate (baking powder), magnesium hydroxide, critic acid, and many others. When Antacid tablets are placed in water, they undergo a chemical reaction, where the sodium bicarbonate breaks apart to make sodium and bicarbonate ions. When the bicarbonate ions collide with hydrogen ions, it produces carbonic acid.

Do the same for the other test tubes. Let the test tubes not be disturbed for about 3- 4 mins. Then add the Amylase solution to the Starch solution and start the stopwatch (immediately). After every 1 min take one drop from the test tubes and place then in the test plate that were