Alka-Seltzer Reaction Rates Lab

Alka- pop Reaction Rates Lab What be the different factors the ensnare the reaction score of Alka- pop? Matthew Arkfeld Leah Gilligan Jessie Abbott Period 4 June 2nd, 2008 Background Research o The objective of the experiment was to determine if different factors affect the reaction rate of Alka-Seltzer. Alka-Seltzer provides fast relief to acid indigestion, upset stomach, heartburn, headaches, body aches and hurtings. It is an antacid and fuss relief medicine used by millions of consumers everyday. It is sold at local pharmacies over the counter and supermarkets worldwide. The original Alka-Seltzer was invented in 1931, the active ingredients are 325 mg of Aspirin, 1000mg of Citric Acid and 1916mg of Sodium Bicarbonate, designed to treat pain and simultaneously neutralize excess stomach acid. It is provided in the form of vainglorious effervescent digss, which are dissolved in a glass of pee. As the tablets dissolve, the base (bicarbonate) and the acid (citric acid) react vi gorously producing carbon dioxide gas, which also produces abounding agitation to allow the active ingredients to dissolve slowly. In our lab, our objective was to streak if peeing at different temperatures, common salt, and vinegar, would affect the reaction rate of Alka Seltzer tablets. However we thought, that the size of the tablet would non matter. Therefore, we decided to test Alka Seltzer broken into fragment and whole ground up as healthful as the normal tablet. Hypothesis and Variables o Hypothesis We believe that sizzling water, and vinegar will affect the rate of the reaction, however, the size of the tablet does not matter. Independent Variables temperature of water (ice, room, hot), Size of tablet ( consentient, pieces, powdered), Solution it is in (tap, vinegar, salt water). o Dependent Variable The rate of reaction of Alka-Seltzer. Materials o 3-quart size reels, 3 Alka-seltzer tablets, ice water, room temperature water, hot water, stopwatch, thermometer, vi negar, salt, tablespoon. Procedure 1. conform to one(a) of the jars a third of the way with ice. wander tap water in it until it is half(a) way full. Let it come to a stable temperature. 2. get hold of the second jar half way actioned with room temperature water. . adjoin the third jar half way with hot tap water (run tap on hot for one minute). 4. Use the thermometer to record temperature for the third waters. Record in table. 5. Put an Alka-Seltzer tablet in each jar and use a stopwatch to record how m either seconds it sucks to dissolve. Do not stir or mix the tablet Record all results. 6. Put all the liquids chain reactor the drain and rinse out jars throughouly with water. 7. Fill the jars half way with room temperature water. 8. In the first jar, place a whole Alka seltzer tablet. Record the clip it takes for it to completely dissolve. 9.Repeat step 9 with the Alka seltzer broken into 8-10 pieces. Record the time it takes to dissolve. 10. Repeat step 9 with the Alka -Seltzer tablet completely crushed into powder. (Crush between two pieces of paper with a hammer) Record the time it takes for it to completely dissolve. 11. Rinse all jars completely and end-to-end again. 12. Fill one jar half the way with room temperature water. Fill another jar one half full with vinegar. Finally fill the last jar half way with salt water. (2 tablespoons, room temperature). 13. bombard an Alka-Seltzer tablet in each jar and record time it takes to completely dissolve. 4. Observe your results. Observations and Data water Temperature cartridge clip to Dissolve Ice Water 1 degree f 155 seconds Room Temperature 74 degrees f 47 seconds Hot Water 110 degrees f 24 seconds Time to Dissolve Whole Alka-Seltzer 45 seconds Broken into Pieces 40 seconds Powdered 11 seconds Time to Dissolve Tap Water 46 seconds Vinegar 68 seconds Salt Water 77 seconds Data Analysis o We discover that a whole piece takes more time to dissolve in water than an Alka Seltzer c ompletely ground up. As comfortably as, temperature changes the hurrying of the reaction in the dissolving process. Finally, vinegar, and salt, slow down the reaction time between the tablet and water. Conclusion o We discovered that it is best to take Alka seltzer with hot water in order to dissolve the tablet the quickest.As temperature decreases, the amount of time that th reaction takes increases. As puff up as, adding other components such as salt and vinegar slow down rather than speed up the reaction. Therefore that rection is best in water at a high temperature. o Our hypothesis was wrong in that, seltzer-seltzer in different shapes affcts the reaction rather than not causing any difference in it. Sources of Error Temperature could have been off, thermometer was broken, and tap water at room temperature was affected by air conditioning. Application o by dint of this experiment we have learned that temperature affects the reaction rate of Alka-Seltzer tablets. As well as, size and solution dissolved in, can either speed up or slow down the reaction. For fastest results, Alka-Seltzer should be broken up into powered pieces and be taken with hot water.