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Stoichiometry Lab Report

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Lab IV – Stoichiometry Lab Investigation Liam Farhangi Chemistry, Period 4 Dr. Juan Bacigalupi January 13, 2023 Lab IV – Stoichiometry Lab Investigation - Abstract Short (100-150 word) summary of the investigation (research question, conclusion, one-sentence summary of procedure, problems, or suggestions for additional research). Goes first, done last. Lab IV – Stoichiometry Lab Investigation The introduction includes (do not forget to indent each paragraph): Paragraph 1 includes the research question, the hypothesis, and the purpose of the investigation Question Part 1 How many moles of carbon dioxide are produced in the reaction of sodium bicarbonate and acetic acid in the video lab? Part 2 What are the actual, theoretical, and …show more content…

There are many different aspects of stoichiometry such as balancing equations, converting between grams and moles, calculating molar mass, and calculating mole ratios (Helmenstine, 2022). When balancing an equation one follows the law of conservation of mass. To convert from mass to moles one must divide the amount of substance by the molar mass of the substance to find how many moles one has. The formula used is (Amount of substance in grams/1)(1 mole/mass of 1 mole of the substance) = amount in moles of the substance. To find the molar mass of a substance looks at the atomic mass of the elements involved. The ratio of the mole quantities of any two compounds present in a chemical reaction is known as the mole ratio (Helmenstine, …show more content…

Trial two will be left out of the conclusion due to the fact that the scientist made a mistake. The results of the theoretical yield of the classroom investigation lab were between 0.0199 and 0.0213 moles of carbon dioxide released. However, the actual yield of carbon dioxide in moles exceeded the theoretical yield. The actual yield ranged between 0.0329 and 0.0473 moles of carbon dioxide released. The percent yield of carbon dioxide in moles released varied from 114.10% to 294.10%. The data found in the investigation is concerning due to the fact that if there were no flaws in the calculations there would be a large amount of contaminants in the physical experiment. However, the scientist mostly inspected the graduated cylinder, beaker, and paper for any contaminants before starting the experiment. It is highly probable that the scientist was unable to properly create the data table, resulting in the final data being distorted. Another possible source of error was that the scientist incorrectly measured the acetic acid, sodium bicarbonate, paper, and

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