What mass of NaCl and water would be required to prepare 50 L of this saline solution? Does the temperature of the water make a difference in the amount of time it takes the tablet to dissolve? Theory: This experiment requires us to use both the Gravimetric and Volumetric methods in order to acquire our percent composition. Show any calculations used to determine your answer. Calculate moles of C 6H 8O 7 in one unreacted tablet? Am having some diffulities with them. Weigh and record the mass of an Alka Seltzer tablet with correct sig. Describe possible sources of error. The whole Alka- Seltzer tablet had an average of 7. Overall, the reaction we will therefore be dealing directly with in this experiment is now shown: Overall, in this experiment, Alka-Seltzer® tablets will be added to 8 different solutions with increasing amounts of vinegar.
Wait about 10 minutes and weigh the beaker again. Another place where mass percent is important is in medications. Data Analysis:Gravimetric Data Table: Mass of empty Test Tube 16. To study the concept of limiting reactant. However, errors may have occurred due to the fact the tablets and film caps weren't put in at synchronized times. When dissolved in water, the sodium bicarbonate undergoes an acid-base reaction with the two acids, which for the sake of simplicity will now just be referred to as H +. I measured out 30mL of water, and 1g of Alka-Seltzer.
I took one sealable bag and weighed it. Weight the beaker and contents again. Its main function is to absorb excess stomach acid. Alka- Seltzer is usually taken when dissolved in a glass of water. This is the ratio we will use to determine which reactant limits the reaction. Does that sound remotely correct? Thanks No he has not mentioned filler, is that something I should research? Alka- Seltzer reacts with water to produce carbon dioxide gas.
It is sold at local pharmacies over the counter and supermarkets worldwide. What is the percentage concentration of 75. Reye's syndrome: Children and teenagers should not use this medicine for chicken pox or flu symptoms before a doctor is consulted about Reye's syndrome, a rare but serious illness reported to be associated with aspirin. Drop the tablet into the beaker and swirl carefully. Alka- Seltzer Experiment Ideas 1.
Then, repeat steps 1-3 with 5 mL vinegar + 30 mL water, 10 mL vinegar + 25 mL water, and so on, increasing the volume of vinegar by 5 mL each time while keeping the total volume of the solution at 35 mL. Knowing what the full equation is would really help if anyone knew it. Jeddah Saudi Arabia Surface area is known to be beneficial to keeping organisms alive it allows huge organs such as the intestines to fit in a small area by being coiled and packed together tightly. Another way to acquire the percent composition is by the Volumetric Method. The overall molecular mass is 203.
Post Lab Questions 5 pts Typed or hand written answers to the Post Lab questions. There are several ways to determine which reactant limits a reaction. I have completed a similar task where I filled a plastic bag with approximately 10 mL of water and dropped. With this method we use the mass of the reactant and the mass of the product. Thus, we will also have the opportunity to strengthen our understanding of mass to mole relationships.
Something tells me though, that there is more to the experiment than just this. I'm not able to make out the details of the experiment you posted originally. In order to do that you'll need to know -the composition of the reactants in alka-seltzer, as it pertains to the stoichiometry of the reaction equation. How much water would you have to add to 2. Add 35 ml of distilled water to a 250 mL beaker, cover it with a watch glass and weigh the beaker, water and watch glass on the top loading balance on your desk.
Put about 10 ml of your solution in two separate test tubes, and add vinegar acetic acid to one tube and solid sodium bicarbonate to the other tube. Our purpose in this lab will be to determine the mass percent of the sodium bicarbonate in an Alka-Seltzer tablet and compare our results to the published mass percentages given by the Akla-Seltzer company. Because the sodium bicarbonate cannot be assessed directly as it reacts with the other ingredients in the tablet to form water and carbon dioxide, we will therefore measure the production of carbon dioxide use stoichiometry to determine the initial mass of the sodium bicarbonate. What is the limiting reactant in an Alka-Seltzer tablet? If I were manufacturing this compound I would have to take that into account since a majority of the product mass would not contain the salt compound I need. What is the percentage concentration of each solute in the solution? Mass of Sodium Bicarbonate unreacted? I would appreciate some advice as to how I can use my current data to finish the lab Am I forgetting to do something? Introduction: Alka- Seltzer is a remedy for indigestion that is dissolved in water and ingested by mouth. After the tablet has dissolved and bubbling has ceased, weigh the beaker and its contents.
I immediately placed the system air tight cylinder with water and Alka-Seltzer mixing under water so that the liquid products stayed about the same height as the water in the bucket. In particular, when the tablet is dissolved in water, the sodium bicarbonate reacts with acetylsalicylic and citric acid to generate the following chemical reaction: Though the above chemical equation appears absolutely terrifying at first glance, it is rather simplistic once we look at what is actually reacting in greater detail. How long will it take each to completely dissolve? The mass percent of a compound or element within another compound is often vital to the viability of a reaction. Place Alka- Seltzer on a plate and pour a steady stream of water on it to see if it reacts any differently than dropping it into a cup of water. As soon as the bubbling ceases, weigh the beaker with the dissolved Alka Seltzer solution. I dropped 1g of Alka-Seltzer in the water after the bag was sealed. The time was then immediately recorded and the procedure was the repeated three times each with whole and crushed Alka- Seltzer tablets.
Put Alka- Seltzer tablets into four different liquids milk, orange juice, Coke, water observe the reactions. I lost 1 mL of water, when poured back into the graduated cylinder, but I assume that was the remaining liquid on the walls of the baggie. Drop ½ tablet in one cup, one tablet in another cup, and 2 tablets in the third cup. With the addition of acetic acid the following acid-base reaction then takes place: 2. Put Alka- Seltzer in different liquids and observe the reactions. As the solution warms, observe if any more bubbles form. Based on your plot from analysis section.