Alka seltzer stoichiometry lab answers

In this lab, Alka-Seltzer an antacid that prevents upset stomachs, acid indigestion and headachesinspired me to create an experiment on it. The inspiration came from a lab in science class. Why do I want to test Alka-Seltzer? The purpose of the experiment is to learn what key factors affect the rate of reaction and what are the key characteristics of what happens during a chemical reaction when Alka-Seltzer in Glucose.

The production of bubbles is made by the baking soda sodium bicarbonate and citric acid reacting to form sodium citrate. Eventually, as a whole tablet, the Alka-Seltzer will disappear in the glucose because what makes up the tablet is gone or dissolved. Something I have observed related to this reaction that has lead me to my question was the reaction between vinegar and baking soda.

From the past, I have observed that when the baking soda comes in contact with the vinegar, it produces bubbles and white foam which quickly rises upwards. Although I have never observed how the temperature affects the rate of reaction between vinegar and baking soda. Fascinating me, it interested me into trying this chemical reaction because it also has sodium bicarbonate but most importantly it has other substances which I have never tested. Question How much time the Alka-Seltzer will take to dissolve in glucose rate of reaction?

First, I broke the six Alka-Seltzer tablets into twelve halves six for each trial. Quickly, I noted down the observations and results. Finally, I did the experiment for a second time, doing everything the same, from step one. But 2nd time we decided to measure gas production rise of bubbles in cm. More bubbles being produced. Has a loud gassy sound.

Big bubbles. Dissolving faster.

alka seltzer stoichiometry lab answers

Water rises higher. Gassy sound is louder. Rises very high and big bubbles. Lab 3 www. Lab 3. Scenario 1: Emission Sources 1. Lab 5 www.

alka seltzer stoichiometry lab answers

Lab 5, Lab 5 Essay writing help source. Manatee Lab www. The lab is the location where the biologists study,We can describe this reaction by the equation:. In this lab, you will collect the gas given off from a sample of Alka Seltzer. Using the ideal gas law, you will determine the mass of gas produced and from that the percent mass lost when Alka Seltzer reacts.

After this, you will use your actual percent of carbon dioxide to determine your percent error and percent yield. Get Materials Materials. Procedure 1. Obtain one sample of Alka Seltzer powder.

Use flat, sturdy object i. Put the 3 oz. Dixie cup on the scale and tare it. Record in your table. Mass an empty 9-inch round balloon. Fill balloon with the powder. Fill a large test tube to the very top with room temperature water. Wipe the rim of the test tube with a paper towel so that it is dry and place the balloon carefully on the top of the test tube.

Straighten the balloon to release the powder. Shake the system and invert if necessary to make sure that all the Alka Seltzer reacts with the water. Consider taking a video and posting it to your Trello. When the fizzing stops, measure the circumference of the balloon at its widest point.

To do this, take a string around the widest point of the balloon.Type up your answers to the following questions and attach this page TO. They will submit one copy of this report to the teacher prior to the end of class and retain a copy. The concentration of oxidizable compound in the sample, based on its stoichiometric reaction with oxygen to yield CO2 assume all C goes to CO2.

CHEM111 Exp#14 Alka Seltzer Analysis

Aspirin Titration to make this an NGSS lab it focuses on mole conversions and some basic stoichiometry — in this it. In this experiment you will be observing the reaction between calcium.

Read this essay on Stoichiometry Lab Report. Reaction Stoichiometry Complex Ion Formation. You received at the beginning of the year titled Lab Report Writing. Inquiry, and discover why each part of a scientific lab report is necessary.

can someone give me the outcome of this alka-seltzer lab?

In CP Chemistry, you will submit your lab reports via Moodle, available at. Set the beaker in an empty lab drawer to react overnight. Stoichiometry: Mole Ratio of an Unknown. Wallace, B. E, Stoichiometric composition of whitlockite, J. Before we began the lab. The purpose of this experiment is to determine the mole ratio of reactants in a. Such as reactions of known stoichiometry. Hypothesis: If the. In this lab, you will need to do a reaction where baking soda will react with an.

Alka Seltzer and Gas Laws Lab

Aspirin is also present in Alka-Seltzer tablets to reduce fever and relieve headaches, but in this lab, we are going to study the reaction that takes place between. Of baking soda to put on so that you won't have so much variety???? Lab 8 Electron Configuration: Chemistry of. Read the entire lab report, including the previous introduction and.

Absorption Spectroscopy and Solution Stoichiometry. Lab Report: Stoichiometry Lab. Lab Report for Unit 9. This experiment provides a. A sample report is shown at the end of the procedure. We report the actual yield using percent yield, which tells us what percentage of the.What am I doing to help kids achieve?

How do I know when they are there? What is the evidence? There is a traditional stoichiometry lab I have done before that involves adding dilute hydrochloric acid to sodium bicarbonate, boiling off the fluid and then getting the mass of the sodium chloride. Students then can solve the percent yield for the sodium chloride based on the amount of sodium bicarbonate they use.

It is not a bad lab, but having hot ceramic watch glasses with acid in them just makes me a bit nervous.

I am not sure where I got this new lab I am about to share, but it has been one that has evolved over the years. It is quick, dirty, relatively simple and uses over the counter mostly materials, making it much safer than the traditional lab that I used to assign.

First we start with some over the counter effervescent cold tablets. The brand name is "Alka Seltzer". Students are asked, "How can you figure out the ingredient that makes the bubbles? Next, we start in on stoichiometry. Ultimately, students figure out that they need the balanced equations to solve this problem. The nice part about this lab is that there are many substances in these tablets, however, the bubbles seem to only come from the baking soda.

Students are provided the question and as a class we work on safety, procedure, materials and data. It is eventually decided that students will use dilute hydrochloric acid to react a portion of the tablet. After the bubbles stop, they let the test tube sit in a bit of warm water for a few minutes to help drive off all of the carbon dioxide. It is important to slowly add bits of the tablet to the acid. The only difference is that after the reaction, the total mass is less due to the escaping carbon dioxide.

The mass of the carbon dioxide can be converted to moles. From here, students use the balanced equation to solve for moles of sodium bicarbonate and then grams. Students then are given the mass of an entire tablet and to solve for the sodium bicarbonate in a whole tablet. They are also provide with the amount of sodium bicarbonate the manufacture claims is in the tablet.

This lab can be used many different ways. A teacher can stress the inquiry part, designing an experiment, experimental versus theoretical results, dimensional analysis, stoichiometry, significant figures or balancing reactions. Depending on your class, you can pick which aspects you believe would be appropriate for your students.

About ten to fifteen minutes are required to complete the procedure and collect data.Using mathematics, it is possible to compare the surface area of an object to its volume and get a ratio. Interestingly, if you crush a tablet, the ratio of surface area to volume will be higher in the smaller particles than with the whole tablet.

On a piece of paper, grind up one tablet with the back of the spoon until it is a fine powder. Simultaneously again, get helpadd the ground tablet to one cup, the chopped tablet to a second cup, and the whole tablet to the third cup.

Begin timing with your watch. You will submit these analysis questions and your two graphs! Make sure you include your data and two graphs.

Look at your graph of temperature vs. Describe this graph in mathematical terms—e. Look at your graph of surface area vs. Describe this graph in mathematical terms.

Based on your data, under what conditions would you expect the reaction between baking soda and vinegar to occur most quickly? John H. Chill some water with the ice. Pour just the water into one coffee cup. Heat some water and place it in a second coffee cup. Put room temperature water into the third cup. Use the thermometer to record, in a data table, the temperature of the water in each cup. Simultaneously get help from another personadd one full Alka-Seltzer tablet to each cup and begin timing with your watch.

Record the amount of time needed for each reaction to reach conclusion stops fizzing. Enter your data Part II: Particle Size and Reaction Rates Using mathematics, it is possible to compare the surface area of an object to its volume and get a ratio.

alka seltzer stoichiometry lab answers

On a second piece of paper, chop one tablet into several small pieces but do not grind it. Fill the three cups with the same amount of water Note: the water should be approximately the same temperature at the start. Record the amount of time needed for each reaction to reach conclusion to stop fizzing.

Graph your results. Analysis You will submit these analysis questions and your two graphs! What differences did you observe in the reactions in the three cups in Part I?

alka seltzer stoichiometry lab answers

As temperature increases, what happens to reaction time? What differences did you observe in the reactions in the three cups in Part II? As surface area increases smaller particleswhat happens to reaction time? Answer Save.August 01, The purpose of this lab was to determine the mass of carbon dioxide released when a sample of alka seltzer is placed in water. This was done by collecting the gas in a balloon and measuring its dimensions after the reaction.

This would allow us to get an estimate of about how much volume of gas was in the balloon and determine the amount of CO2 given off. We could determine the volume not only by measuring the size of the balloon but also filling the balloon to the same size with water and measuring the amount of water in a graduated cylinder.

Discuss an area in this lab where expe r imental error may have occurred. One of the main spots we could have had an experiment al error was when we attempted to fill the balloon with water to the same size it was after the reaction. This was very difficult because water is much heavier so it stretched the balloon into a slightly different shape from the original which could have easily effected the measurement.

Also, we just used a string to measure the circumference of the balloon which wasn't exactly a sphere and we just used a string. Another error could have been at the beginning of the lab because we had to transfer the powder from a bowl to the balloon and some of it could have stuck to the bowl or just not make it into the balloon.

Choose one error from above and discuss if it would make "n" the number of moles of CO2 too big or too small. One of the errors I mentioned above was the fact that some of the alka seltzer powder might have not been transferred into the balloon and could have been stuck to the bowl or spilled.

This would reduce the moles of CO2 because less powder would be able to react with the water meaning less CO2 could be produced. Filling the balloon with water may be one place where error could have occurred. Using the value for the circumference of the balloon in cm, calculate the volume of the balloon mathematically. Compare your answer to 3 to the volume obtained by filling the balloon with water. Is it close? Which do you feel is more accurate and why?

This makes sense because during the experiment, we did not use very exact processes to calculate the circumference and the amount of water used to fill the balloon could have easily not been exact. This is why I believe the mathematical solution is more accurate. The ideal gas law technically applies to ideal gases.

Give two differences between a real gas and an ideal gas. You may use your computer or book to research.All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply. Hottest Questions. Previously Viewed.

Unanswered Questions. Medication and Drugs. What is the limiting reactant in alka-seltzer? Wiki User Sodium bicarbonate is the limiting reactant.

Related Questions Asked in Chemistry What is the limiting reactant in iron oxidation? The limiting reactant in iron oxidation is iron oxide. A limiting reactant is also referred to as a limiting reagent. Asked in Chemistry, Elements and Compounds What reactant in a chemical reaction is the limiting reactant? The term limiting reactant refers to any reactant that is used up first in a chem reaction. The limiting reactant determines the amount of product that can be formed. Asked in Chemistry Why is the term limiting used to describe the limiting reactant?

The term "limiting" is used because the limiting reactant limits the amount of product produced. Asked in Chemistry What reactant gives the lowest yield by limiting the amount of product?

A reactant that gives the lowest yield by limiting the amount of product is called a limiting reactant. The limiting reactant will run out, so that only a limited amount of product can be made from the reactants. Asked in Chemistry What is the definetions of limiting reactant in chemistery?

In this reaction zinc is the limiting reactant. The non-limiting, or excess reactant, is the reactant that does not expire first in a reaction. There will be some of this leftover after the reaction goes to completion. Asked in Chemistry, Chemical Equations Why is the theoretical yield of a reaction determined only by the amount of the limiting reactant? Because the limiting reactant It is completely consumed before the other reactant.

Alka seltzer stoichiometry lab answers