Lab 6: Stoichiometric Analysis of an Antacid Andrewsky (adapted from Lucas and A
ID: 229203 • Letter: L
Question
Lab 6: Stoichiometric Analysis of an Antacid Andrewsky (adapted from Lucas and Ansell) CHEM&12 COMPLETING THE REPORT Work the pre-lab questions before your lab day. Your instructor will check in class that these questions have been done. in the lab, be sure that all data is recorded by each member of a lab team so that ill have the necessary information to complete the calculations later. After performing the experiment, complete the calculation sections by providing the results indicated. Show work for each result in the space available or attach additional pages in needed, and include all unit labels. Be careful to follow the significant figure conventions as you round off the results of calculations to the appropriate decimas place POST-LAB QUESTIONS Guidelines" for more information on responding to post-lab discussion questions. 1. (4 pts) In Part B, suppose the tablet was mostly dissolved when some of your solution splashed out of Use complete sentences in this section. Cite your lab data where appropriate. See the "Laboratory the beaker as CO; continued to evolve. How would this affect the perceived mass of CO? Would your final calculated mass of sodium bicarbonate in the tablet be artificially high or artificially low as a result of this splashing? Choose one, and explain why. TO TURN IN You will turn in this handout with all of the data, calculations, and responses to post-lab questions recorded on this handout. Staple your Purpose Statement and Procedural Outline to the back of this lab handout as well as any additional pages you completed work on. If additional pages were necessary, write a note within the handout to direct the instructor to find this additional work on these scrap pagesExplanation / Answer
Post lab
1. If some of the solution is splashed out of the container, the perceived mass of CO2 would be artificially low as a result of it. Therefore, the calculated mass of sodium bicarbonate would be lower than the actual value.
1 mole of NaHCO3 gives off 1 mole of CO2
lower CO2 means lower NaHCO3
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