ipl-logo

Stoichiometry Lab Report

2800 Words12 Pages
bulb-icon

Recommended: Stoichiometry experiment

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

Show More
Related

A Comparison Of 1.07 Mass Of Na2co3 And Filter

1513 Words | 7 Pages

Another possible source of error could come from the complete filtration of the precipitate (CuCO3). This would lead to lower measurement of the mass of CuCO3 and filter paper and a lower overall percent yield. In future experiments, to eliminate errors in the percent yield, the experiment should include multiple trials for more reliable data and a close actual percent yield to 100 percent. The experiment could also be performed with a higher grade filter paper to ensure most precipitates do not pass through to the filtered solution, leading to a more precise measurement of the mass of CuCO3 and filter paper and an overall more accurate calculation of the actual percent yield. The measured percent yield may have been affected by the errors,

Read More

Dow's Unknown Substance Mystery Lab Report

787 Words | 4 Pages

Which was 117.60 grams for substance 1, 87.71 grams for substance 2, 54.7 grams for substance 3, 25.11 grams for substance 4. Once we finished weighing each unknown substance we started figuring out the g/mol mass of each compound that the substances could possibly be, which is how we got to Table #2 above. In order to find the g/mol mass of each of the compounds, we had to find the molar mass of each element, then multiply and add accordingly. I'll use K2SO4 as an example of how to calculate the molar mass of a compound. The elements in K2SO4 are Potassium, Sulfur, and Oxygen.

Read More

Nahco3 Lab Report

558 Words | 3 Pages

These findings show that the null hypothesis is rejected, and that there is a major difference between the observed and expected values. It is also observed that in the data in Figure 1.1, as the concentration of the NaHCO3 increases, the greater the production of oxygen. The highest photosynthetic rate is in at a 1.0% concentration of NaHCO3and the lowest in at a 0.1% concentration of NaHCO3. It is also important to note that the 0.4% concentration of NaHCO3 had a greater oxygen production than the 0.6% concentration of NaHCO3.

Read More

Stoichiometry Lab Report

418 Words | 2 Pages

That is where stoichiometry comes along, which is the quantitative relationships or ratios between two or more substances undergoing a physical or chemical change in a balanced equation. It identifies the mole ratio between reactants and products. To understand stoichiometry you have to understand the products and reactants, which involves how to solve balanced reactions. This allows chemists to determine how many moles of a product will be produced from a specific number of moles of a recant or how many moles of reactant are needed to produce a specific amount of a product.

Read More

Unknown Compound

1525 Words | 7 Pages

In order to find the amount of a product made during a double displacement reaction, the product has to be separated from the solution. From this number of moles of precipitate can be calculated. From there the number of moles of reactants can be calculated using the mole ratios of the particular reaction that occurred. As seen in Table 5 it is shown that by finding out the number of moles of the unknown, the molar mass of the unknown can be calculated. From the found mass of the unknown compound, the mound of the original ion can be found.

Read More

Stoichiometry Lab

563 Words | 3 Pages

3. In this experiment, the percent yield was 90%. This number implies that there was little error in this experiment. However, this result could have been caused by certain external factors.

Read More

Palmitic Acid Lab Report

508 Words | 3 Pages

In the end, my results were very close to the actual values, which produced my low percent error of -3.0%. In conclusion, this lab experiment went well. I completed the objectives successfully, concluding with fairly accurate data, and thus a low percent error. However there is a small space for improvement within the construction of this lab, which possibly could have prevented the negative error I obtained.

Read More

Cellular Respiration Lab

478 Words | 2 Pages

In order to observe oxygen consumption exclusively, NaOH was utilized to absorb carbon dioxide. An absorbent cotton ball saturated with one molar NaOH was placed on the bottom of each vial, followed by a non-absorbent cotton ball in order to ensure the chemical

Read More

Stoichiometry And Limiting Reagents Lab Report

1237 Words | 5 Pages

If only one reactant is increased, then the chemical reaction will only produce a certain amount of products after the limiting reagent is used up, and in this experiment, the most mass the reaction could produce was 0.4 grams. Although we kept adding calcium chloride, not adding sodium hydroxide in the same proportions will not yield more product, which is the main goal in conducting this lab. We should have seen a plateau at 0.4 grams to show that the limiting reagent inhibited further Ca(OH)2 production, but we made several mistakes in our experiment, which made the data unusable to conclude. Once again, the data is polluted, so these number are not accurate, but it is the data our group has to work with. The theoretical yield should have been more than the actual yield, and the percentages should have been less than 100.

Read More

Stoichiometry Lab Report

193 Words | 1 Pages

Finding the average mL NaOH added during the steep section of the curve. The mL are added together and then divided by the number of values used. Using stoichiometry to find the concentration of CH3COOH. The equation n =Cxv fis used to find the moles of NaOH, which can then be changed into moles of CH3COOH with a mole ratio The moles are converted into the concentration using C=n/V. Finding the concentration of H30+ by using initial pH of the equilibrium.

Read More

O2 Synthesis Lab

390 Words | 2 Pages

Multiple experiments were conducted to test the rate at which O2 production was influenced by the availability of inorganic carbon. In all experiments, a varying concentration of (either 0.1%, 0.4%, 0.6%, 0.8%, or 1.0%) sodium bicarbonate was assigned to each lab bench, to use as the solution in which the aquatic plants were submerged. In the experiment my partner and I conducted, ~225 mL of distilled water was poured into two 250 mL Erlenmeyer flasks. These would later be used as photosynthetic systems— an experimental control to regulate temperature changes.

Read More

Mass And Mole Relationships In A Chemical Reaction

949 Words | 4 Pages

Molar mass is the mass in grams in one mole of substance. The units for molar mass are in grams per mole. Molar mass is the same number as the formula mass that needs to be found except it is converted. Formula mass is the mass in atomic mass unit of one particle of

Read More

Titration Lab Report

470 Words | 2 Pages

The lab manual states that for the titration of NaOH and HCl, a volume of 7mL of titrant should complete the reaction, however, the average for the experiment was only 6.25mL. This smaller amount of NaOH could have occurred by adding too much phenolphthalein, which would have caused the substance to turn pink sooner, rather than when the reaction was complete since phenolphthalein is a weak acid. Another example of error occurred in the titration of NaOH and H2SO4, a substantial difference appeared in the theoretical ratio of 2:1 and the experimental ratio of 2.5:1. This could have occurred by adding past the titration end point, resulting in more NaOH than necessary, thus altering the ratio. Both reactions involving Ba(OH)2, had relatively low percent errors, especially in the HCl reaction (approximately 5%) and a higher percent error with H2SO4 (approximately 20%).

Read More

Sodium Bicarbonate Lab Report

1212 Words | 5 Pages

Hypothesis: An increase in the concentration of the acetic acid vinegar will cause a correlating increase in the volume of CO2 bubbles produced. Variables: Independent variable: 20%,40%,60%,80% and 100% concentrations of 20 ml vinegar Dependent: The volume (ml) of Co2 bubbles formed Controlled variables: 5 grams of Sodium Bicarbonate 20 ml of vinegar acid Apparatus used during the

Read More

Science Grade 9 Final Report

649 Words | 3 Pages

a. Our assessments align with the Science Grade level Expectations. The standards followed for this assessment were: 7.Sci7Inquiry.1A.a Formulate testable questions and hypotheses 7.Sci7Inquiry.1A.c Design and conduct a valid experiment 7.Sci7Inquiry.1B.b Determine the appropriate tools and techniques to collect data 7.Sci7Inquiry.1B.c Use a variety of tools and equipment to gather data (e.g., microscopes, thermometers, analog and digital meters, computers, spring scales, balances, metric rulers, graduated cylinders, stopwatches) 7.Sci7Inquiry.1C.a Use quantitative and qualitative data as support for reasonable explanations (conclusions) 7.Sci7Inquiry.1D.a Communicate the procedures and results of investigations and explanations through: oral presentations, drawings and maps, data tables (allowing for the recording and analysis of data relevant to the experiment, such as independent and dependent variables, multiple trials, beginning and ending times or temperatures, derived quantities), graphs (bar, single line, pictograph),equations and writings Based on these standards, the learning goal for this unit is, “the student will be able to design valid experiments,” and the learning target is, “I can conduct valid experiments.” Lessons taught prior to this assessment were used to prepare students for this unit assessment, the benchmark assessment, and will become the

Read More

More about Stoichiometry Lab Report

Related Topics

Open Document