Alka Seltzer Lab Report

A pattern that was found is that the water data is more consistent than the data for the juice and the seltzer. We know this because the data for the juice has a 16 second difference. The data for the seltzer came to a difference of 27 seconds. Finally the waters difference is 12 seconds, the most

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.

Introduction: Alka-seltzer contains three active ingredients, aspirin, sodium hydrogen carbonate and citric acid. It is used for headaches, migraines, and cold and flu symptoms. Alka-Seltzer is usually taken when dissolved in a glass of water. When placed in water a series of chemical reactions result into Sodium citrate and Sodium acetylsalicylate. The sodium citrate would act as the antacid for stomach pains, and the sodium acetylsalicylate would act as the pain reliever.

I conclude that the warmer water you have the less time it will take for the Alka Seltzer to dissolve completely. If you have cold water it will take longer to dissolve.

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

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 goal of this lab was to determine the amount of grams of sodium bicarbonate (NaHCO3) required to produce enough CO2 gas to completely fill the lab and also how many Alka-Seltzer tablets that would equate to. This was done by collecting CO2 gas by inverting a buret and submerging it under water in order to calculate the volume of CO2 released from a fragment of Alka-Seltzer tablet. The main component of Alka-Seltzer is sodium bicarbonate, used to neutralize excess stomach acid during illness through the following reaction that generates CO2:

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.

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 scientist’s topic reveals around temperature. The scientist trying to figure out which temperature has the fastest reaction time. The independent variable for this experiment is the different temperatures being used, the dependent variable is the reaction time for the Alka-Seltzer tablets.

The purpose of my experiment was to see if the temperature of water would effect the defusing of food coloring. My hypothesize was that the warm water would defuse the food coloring the fastest because in warm water molecules move faster. My supplies where an apron, canning jars, red food coloring, goggles , a thermometer and a graduated cylinder . I filled each of the two jars with 90 mL of water, one with cold water and then one with hot water. The first jar (hot) had the temperature of 110 degrees Farenhiegt and the other jar (cold) had a temperature 52 degrees Farenhieght. As an observation I noted that the jar with the cold water had formed condensation on the jar because the air was warmer then the water. I put one drop of food

The Effect of Different Temperature Water on Alka-Seltzer Dissolving Time The Effect of Different Temperature Water on Alka-Seltzer Dissolving Time Trial 1 Trial 2 Trial 3 Trial 4 Trial 5 Average 30 °C 90.00 sec 97.74 sec 73.63 sec 101.94 sec 70.13 sec 86.72 sec 50°C 50.01 sec 80.59 sec 90.16 sec 87.15 sec 70.81 sec 75.74 sec 70°C 56.65 sec 56.57 sec 56.60 sec 56.80 sec 57.16 sec 56.76 sec 90°C 20.85 sec 27.78 sec 28.78 sec 27.35 sec 29.91 sec 26.95 sec 110°C 25.41 sec 24.03 sec 21.73 sec 22.14 sec 26.17 sec 23.90 sec Figure 1 The data table is showing the relationship between temperature of water and dissolving time of Alka-Seltzers. Alka-Seltzers were placed in 30°, 50°, 70°, 90° and 110° water.

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

After collecting a new sample of pond water5, I distributed two to three mL of the sample into two separate petri dishes. Using a thermometer, I measured and recorded the temperature of both samples at room temperature. Through observation with my microscope, I found an organism that existed in both of my samples and focused my studies on it. I used a heat lamp to raise the temperature of the water to 30°C in my experimental group, and I observed and estimated the rate of motion of the organism at each 2°C interval as the temperature decreased after removal from the heat lamp. I then used ice water to help my experimental group decline in temperature from 25°C to 20°C, and continued to observe and record rate of motion of the organism. I also monitored my control group and it’s rate of motion compared to it’s unmanipulated temperature, which was still measured frequently. The behavior of the group of heated and cooled organisms were compared to the control group. For consistency, I created a table of expected behavior and movement described on a ten point scale and used it as my operational

I did my experiment three different times. Each time the results were different. But by the end, the first experiment and the third experiment had the same data. For the first experiment the times were: Ginger ale - .01, orange juice - .08, water - .11, and milk - .13.