This Lab will be a combination with the Lecture covering Chapter 6 in the Tro te
Place your order now for a similar assignment and have exceptional work written by our team of experts, At affordable rates
This Lab will be a combination with the Lecture covering Chapter 6 in the Tro textbook, “Chemical Composition”.
CLICK HERE for LibreTexts eText version of Chapter 6 (Links to an external site.)
Before You Begin:
The Formula Mass of: sodium bicarbonate, NaHCO3 (also known as sodium hydrogen carbonate)
The Molar Mass (“MM”) of carbon dioxide, CO2
QUESTION: What distinguishes “Formula Mass” from “Molar Mass”?
I will work with you to complete the PRE-LAB exercise on Page 211. You will turn this in as part of your lab.
NOTE: The chemical equation you select based on the NaHCO3 : CO2 mole ratio is not necessarily the one that is actually in the experiment!
In the CHEM& 140 Workbook, 2020 edition:
The “Stoichiometric Analysis of an Antacid”, pp 203-212 (listed as “Experiment 8”)
Lab 04 – “Stoichiometry of an Antacid”
Empirically determine the correct balanced chemical equation for the reaction of NaHCO3(s) with CH3COOH(aq) to produce CO2(g).
Using the correct chemical equation from Part A, calculate the amount of NaHCO3(s) contained in an average Alka Seltzer tablet. The “actual” mass value, in mg, is shown on the back side of the package.
Additionally: Calculate the % error difference between your results and the mg sodium bicarbonate listed on the back of the package. The “experimental” or “empirical” value is what you calculated in the experiment; the “actual” or “true” value is what’s listed on the back of the package.
NOTE: to calculate the correct number of moles of CO2(g), remember that some of it has dissolved in the acetic acid solution. See the NOTE that appears after the “REACTION STOICHIOMETRY” table on p. 303.
Video demonstrations of the Lab:
CLICK HERE for the link to the lab demo for Stoichiometric Analysis PART A (Links to an external site.) (Links to an external site.)
CLICK HERE for the link to the lab demo for Stoichiometric Analysis PART B(Links to an external site.) (Links to an external site.)