When an alka seltzer tablet is dropped into water, an acidbase reaction between the citric acid. The student lab sheet alka seltzer lab is included here in the resources. One mole of co 2 is produced per one mole of nahco 3 consumed. The tablets are thin and brittle, so they break easily. Its main function is to absorb excess stomach acid hcl. Alka seltzer lab report by claire niewiara on prezi. Alkaseltzer is one of the worlds bestknown antacids. The active ingredient is sodium bicarbonate, which is. Start by sealing the end of the cardboard tube with several pieces of duct tape or use a plastic tube with one end sealed. To show this reaction, a balloon that contained the crushed up alka seltzer was placed on top of a large test tube that contained water. What will weather faster, a broken alka seltzer or a whole one.
Looking at this equation, you will be able to calculate the theoretical amount of co2 gas that should form when the alka seltzer reacts with water. Your students will experiment with four different variables in order to see how they change the reaction rate between alka seltzer and water. Does storebrand alkaseltzer work as well as namebrand alkaseltzer. Alka seltzer and factors that affect reaction rates. Drop the whole alkaseltzer tablet into the beaker and time how fast it dissolves 2. Lately, we have been focusing on a lot of simple science experiments with water. I then give students several minutes to read over the lab on their own.
Alkaseltzer is usually taken when dissolved in a glass of water. Alka seltzer lab report alka seltzer lab report introductionpurpose as a learner, i am very fond of observing chemical reactions especially materialssubstances that dissolve and create bubbles. Alkaseltzer reaction rates lab what are the different factors the effect the reaction rate of alkaseltzer. Alkaseltzer lab is the perfect introduction for students learning about scientific method and writing lab reports. For this extension students read an article discussing how aspirin should be taken if someone is having a heart attack. Surface area of an alka seltzer tablet introduction. This provides a good contrast between a physical and chemical change. Stop the time when the entire tablet has dissolved. How much time do you think it will take for an alka seltzer. Alka seltzer alka seltzer rockets supplies original effervescent formula alka seltzer tablets water empty film canister with lid tape measure or meter stick markers, colored pencils, or crayons tape 5x8in. Find out how you can make a rocket powered by alkaseltzer and water with this fun experiment.
With the soda, the co 2 is produced as a result of vigorous shaking. In this lab students will use alka seltzer to understand the law of conservation of mass. Use the thermometer to take the temperature and record it on your data sheet. Determination of % by mass of nahco in alkaseltzer tablets. In this lab you will determine how much co 2 is generated and released to the atmosphere by. To understand gas laws and the rate of reactions hypothesis. Alkaseltzer lab effect of surface area on weathering rate materials 2 beakers 3 alkaseltzer tablets room temperature water timing device sheet of paper procedure 1. Effervescence laboratory experiment instructors version date.
This lab uses the alkaseltzer original tablets that contain aspirin acetylsalicylic acid, c 9 h 8 o 4, citric acid c 6 h 8 o 7, and sodium bicarbonate nahco 3. Alka seltzer effervescent products can do more than relieve heartburn. Alkaseltzer is a remedy for indigestion that is dissolved in water and ingested by mouth. You will submit a typed, formal lab report, including all pre lab and post lab assignments. Matthew arkfeld leah gilligan jessie abbott period 4 june 2nd, 2008 background research. It guides the students through each step of the process to ensure students are engaged and succe. Describes a general chemistry experiment involving gas law calculations, utilizing alka seltzer as a source of carbon dioxide. Effervescence laboratory experiment instructors version developed by. When the bubbles pop, the color blobs sink back to the bottom of the bottle, and the whole thing starts over until the alkaseltzer is used up. Conservation of mass lab troup county school district. Alkaseltzer lab report alkaseltzer lab report introductionpurpose as a learner, i am very fond of observing chemical reactions especially materialssubstances that dissolve and create bubbles. In vitro buffering capacity of alka seltzer effervescent.
Final lab report the abstract is a short paragraph summarizing purpose, problem examined, results, and outcomes of the lab. Determination of % nahco3 in alka seltzer tablets objectives. Alkaseltzer contains three active ingredients, aspirin, sodium hydrogen carbonate and citric acid. Decorate and color the index card with the supplies of. The moment the tablet starts dissolving, a chemical reaction occurs that releases co 2 gas.
Frist break a tablet of alkaseltzer into 4 equal pieces. Alkaseltzer lab part 1 effect of surface area on weathering rate materials 2 beakers 3 alkaseltzer tablets room temperature water timing device sheet of paper procedure 1. In this experiment, alka seltzer original tablets will be dissolved in various volumes of vinegar acetic acid and the amount of gaseous co 2 produced in the reaction eqn 1 can be indirectly measured from the mass lost. The purpose of this experiment was to determine if changing the form of alkaseltzer when added to the water, affects the time it takes for the cap to burst. For each of the four particle sizes, you should repeat the experiment three times for a total of 12 trials.
Lets investigate this addition of alka seltzer to water. I use this lab before i teach the law so students can discover it on their own. Use two alka seltzer tablets and determine what the temperature extremes are and the rate of reaction. This overthecounter medication is taken differently than most others since it is added to water before ingesting, rather than being washed down with the water. Alka seltzer lab part 1 effect of surface area on weathering rate materials 2 beakers 3 alka seltzer tablets room temperature water timing device sheet of paper procedure 1. Regents chemistry, honors chemistry and anatomy and physiology. With an alkaseltzer tablet, the co 2 is produced as a result of a chemical reaction. Reaction rate sa instructional slide show final 170710. Once there is too much gas, the force of it pushes off the cap. Wear complete and proper personal protective equipment following the recommendation of section 8 at a minimum. Alka seltzer is sometimes taken for acid indigestion. In this lab you will be reacting sodium bicarbonatean ingredient in alka seltzer with acetic. Alka seltzer rocket heres a clever variation of the classic pop your top activity, but this time you launch the bottom of the film canister like a rocket.
Try various water temperatures and see if the observed temperature changes are linear or exponential. It is used for headaches, migraines, and cold and flu symptoms. The fizzing you see when you drop an alkaseltzer tablet in water is the same sort of fizzing that. When you drop the tablet in water, the acid and the baking soda react and produces the fizz. Make sure safety glasses and examination gloves are on before entering the lab. Journal of chemical education, v57 n7 p51718 jul 1980. Alex jannini, david krause, heather malino and kevin sweeney. Heres another wonderful saturday science preschool science experiment that is easy to set up and fascinating to watch.
Effervescence laboratory experiment instructors version. With an alka seltzer tablet, the co 2 is produced as a result of a chemical reaction. If you look at the ingredients for alka seltzer, you will find that it contains citric acid and sodium bicarbonate. As an essential business serving the needs of the education and healthcare communities, we will be continuing to process and ship orders as well as provide ongoing customer service support. Scientists use balanced equations to determine precise amounts of chemicals to use or produce in chemical reactions. Dike with suitable absorbent material like granulated clay. Alka seltzer poppers alka seltzer is sometimes taken for acid indigestion. Make a paper rocket propelled by alkaseltzer and water.
Guaranteed fun for the whole family with the exception of the dog. Alkaseltzer tablet foam cup,8oz balance, readability. This is found on the last page of their alka seltzer and rates lab. Introduction alka seltzer is an overthecounter antacid and pain relief medication that is taken by dissolving it in water before ingesting. How big of a difference in the rate of a chemical reaction can temperature make. In this lab, you will determine how surface area affect the rate at which materials weather. The activity also provides a representation of leo, meo, and geo orbits. At i minute, alka seltzer tablets were still effervescent, so 2 minutes was used as the starting point.
To do this i first pass out the alka seltzer and rates lab paper. Bubbling blob lava lamp experiments steve spangler. Preschool science saturday science blog hop alka seltzer, oil and water science experiment. When the alka seltzer was dropped into the water, a reaction was created that produced carbon dioxide. Alka seltzer fizzingdetermination of percent w by mass of. The gas builds up in the canister and pushes on it.
Find out how you can make a rocket powered by alka seltzer and water with this fun experiment. Richard farrer my two main research interests are 3d lithography and the interaction of nanoparticles with cells collaboration with dr. Stir the ice water for about 15 seconds so the temperature will come to equilibrium. Make a paper rocket propelled by alka seltzer and water. Drop one alkaseltzer tablet into the baggie and quickly close up the zip lock baggie. Determination of % nahco 3 in alka seltzer tablets. Lava lamp contributed by the chi epsilon mu xem chemistry club at austin peay state university main science idea for kids the main idea for kids is the concept of density, in particular, the idea that things that. Why do you think the solution had to be heated to drive off the remaining co 2. Drop 1 whole tablet into the beaker and start the timer.
Now in lab, students will explore the buffering ability of. Alkaseltzer tablet foam cup,8oz graduated cylinder, 100ml 5% vinegar, 35 ml balance, readability. Produce a quick and moving rainbow of colors with an alkaseltzer tablet and a little vinegar. The state of illinois has declared a mandatory shutdown which is currently in place. Effect of temperature on rate of reaction alkaseltzer.
The idea came from a newspaper editor in elkhart, indiana, in the 1920s and was. Using the ideal gas law, you will determine the mass of gas produced and from that the percent mass lost when alka. How much time do you think it will take for an alka seltzer tablet to dissolve disappear when dropped into 150ml of water at room temperature, in ice water, and in hot water. Design lab water and alkaseltzer essay 1177 words cram. This will come at the front of the lab, but should be the last thing written. You will submit a typed, formal lab report, including all prelab and postlab assignments. One may wonder why alkaseltzer fizzes when you dissolve it in alkaseltzer, the following reaction occurs, when it is dissolved in water. Wait until the fizzing has stopped and the alkaseltzer tablet has completely dissolved. Alka seltzer fizzingdetermination of percent w by mass of nahco 3 in alka seltzer tablets an undergraduate general chemistry experiment yuehhuey chen.
This carbon dioxide rose and ultimately inflated the balloon. Drop a quarter of an alka seltzer tablet into the hot water. Alka seltzer fizz faster or slower by changing the temperature of the water. In this lab, alkaseltzer an antacid that prevents upset stomachs, acid indigestion and headaches, inspired me to create an experiment on it. In this lab, alka seltzer an antacid that prevents upset stomachs, acid indigestion and headaches, inspired me to create an experiment on it. The tums will almost always be significantly cheaper. The buffering capacity of antacid solutions the buffering capacities of the 20 ml solutions of alka seltzer containing 1, 2, 3 or 5 tablets, 30 mil of 0.
Measure the time required for the reaction to be completed. When the chemical reaction between the alkaseltzer and water is over and the bubbling stops, youre left with a cool looking wave bottle that will sit proudly on your desk. Alka seltzer at least 12 water tape measure pencil safety glasses color pencils optional. Lab documentation student handout stoichiometrydetermination of percent by mass of nahco3 in alka seltzer tablets i.
Can you make alkaseltzer fizz faster or slower by changing the temperature of the water. Over the plastic table cloth, pour water into a film canister until it is about. This is a guided lab for middle school science students. Spot test lab this activity will give you practice in identifying some overthecounter drugs with spot tests. The stoichiometry of alkaseltzer this lab will count as your honors project. How can you get the alkaseltzer to dissolve fastest.
In this investigation we will come up with a hypothesis and then test it by conducting an. After 34 minutes i ask students the goal of the lab. Seltzer rocket lab big idea students will learn about the engineering process while conducting and observing three launch altitudes using film canister seltzer rockets. Write the balanced chemical equation for the reaction of nahco3 alka seltzer and acetic acid. To determine the amount of nahco 3 in alka seltzer tablets by observing the amount of co 2 produced from the acid base reaction of hco 3 with acetic acid in vinegar. When most students have completed the lab i lead them in performing the extension activity. I ask for volunteers and they let me know that it is to test the factors that affect reaction rates. The force of the gases pushes down on the floor, but the rocket goes up in the. Alkaseltzer lab effect of surface area on weathering rate. You need to have four whole tablets for this experiment. To determine the amount of nahco3 in alka seltzer tablets by observing the amount of co2 produced from the acid base reaction of hco3 with acetic acid in vinegar. The fizzing you see when you drop an alka seltzer tablet in water is the same sort of fizzing that.
Alkaseltzer provides fast relief to acid indigestion, upset stomach, heartburn. Freebies lesson and lab exchange chemistry takehome. Alkaseltzer effervescent products can do more than relieve heartburn. Inside the alka seltzer tablet is an acid and a base. When you add water, the acid and base react and give off carbon dioxide gas. In this lab, you will collect the gas given off from a sample of alka seltzer. Antacid comparison laboratory instructors version developed by. Set aside any remaining alkaseltzer for the other trials. Alkaseltzer page 2 of 4 section 6 spill or leak procedures prevent the spread of any spill to minimize harm to human health and the environment if safe to do so. Alka seltzer is one of the worlds bestknown antacids. When placed in water a series of chemical reactions result into sodium citrate and sodium.
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