Stoichiometry

Sarah Bounab BQD Experiment 2: Copper/Iron Stoichiometry Abstract: The purpose of the Copper/Iron Stoichiometry lab was to determine which of the two possible iron sulfate compounds formed when reacting aqueous copper(II)sulfate with solid iron metal. The techniques used in this lab were weighing by difference, quantitative transfer, and vacuum filtration. At the end of the experiment it was found that iron was the limiting reactant and iron(II)sulfate was a product of the reaction between 7.0002g of copper(II)sulfate and 2.0101g iron metal which produced 2.3037g of copper product with a percent yield of 100.72%. Introduction: Much research has gone into studying how to best utilize the degradation abilities of various bacteria and fungi.…

In the scientific world, there is a significant difference between calculated values and values measured in investigations. Percentage Yield is the ratio, between masses, of the actual yield to the theoretical yield. The actual yield is the amount or mass of product actually collected during an experiment or industrial process, while the theoretical yield is the amount or mass of product predicted based on the stoichiometry of the chemical equation. In order to calculate the theoretical yield,…

Stoichiometry is known as the quantitative relationship between various products and reactants in a chemical reaction. There are many ways one can stoichiometry in his/her advantage. If you start off with a known amount of reactant, stoichiometry can definitely be used to make a prediction to the amounts of the future product that will be formed. And in the other side, if you has a desired amount of product want, you can use stoichiometry to predict of on how much reactant you will need to…

Background : Stoichiometry is the relationship between the relative quantities of substances taking part in a reaction or forming a compound, typically a ratio of whole integers. In the lab that I did with my group we used stoichiometry to find out the decomposition of sodium biocarbonate. Sodium carbonate is just another name for baking soda, and that is what we used on our lab. Baking soda is also used in some food items, such as pancakes, waffles etc… When the baking soda is being heated…

Title: Stoichiometry to Calculate Reaction of Zinc and Iodine and Law of Conservation of Mass Authors: Sang Nguyen and Sami Biro Introduction II. Materials and Methods A. Materials Zinc (Zn), iodine (I2), acetone (C3H6O), acetic acid (C2H4O2) and zinc iodide (ZnI2) were used to conduct this experiment in order to confirm the validity of the law of conservation of mass as well as to use Stoichiometry to calculate the reaction between zinc and iodine. There are some precautions that one must…

The maximum amount of product that can be determined from an experiment is called the limiting reagent, this is because this reagent runs out first. In our lab the amount of Cu3(PO4)2 was determined from the amount of CuCl2 in the reaction. When CuCl2 ran out no more Cu3(PO4)2 could be produced. The theoretical Yield is found by calculating the maximum amount of product the limiting reagent can produce. The theoretical yield in our experiment was .304 grams, we calculated this value using…

The purpose of the experiment was to observe limiting reactants by using a fixed amount of one reagent along with a varying the amount of the second reagent used in a chemical reaction. Through these results, the concept of limiting reactants can be determined. Using a graph to demonstrate the relation between the volumes of hydrogen gas produced versus the moles of the reagents will help figure out the stoichiometric balance required. The success of the experiment will be determined by the…

Stoichiometry is typically used during reactions or formations to find quantities of the same unit. Chemical reactions are processes that rearrange the molecular structure of an element. A single-replacement reaction is a chemical reaction in which an element reacts with a compound and replaces a different element in another compound. Aluminum is one of the most abundant elements on Earth. It makes up about 7% of the Earth's crust. The oxide layer that aluminum forms makes the metal resistant…

Background Stoichiometry is a branch of chemistry that measures the quantity of chemicals in a reaction. This branch relies heavily on moles and balancing. A mole is a unit of measure for giant quantities. It is a number of atoms or molecules that is so large that it is only logical and convenient to use it for atoms and molecules. One mole is 6.02 x 1023 atoms or molecules. We call this Avogadro's Number. Furthermore, balancing chemical equations is the process of changing determining the…

because of some errors that occurred during the gravimetric analysis sections of the investigation. Moreover, with the initial hypothesis stating that colourimetry would be the better method due to the fact that gravimetric analysis is subject to various errors, the statement ultimately agrees with the trends in the data, none of which were present for the graphs showcasing gravimetric analysis results due to the fact of errors occurring within these sections of the investigation. Nonetheless,…