Stoichiometry

OBJECTIVE: The purpose of this lab is to determine the percentage yield of the reaction between sodium bicarbonate and acetic acid. INTRODUCTION This lab demonstrates the double replacement / acid-base neutralization reaction between the reactants of two household cooking items, baking soda and vinegar, producing carbon dioxide, water, and sodium acetate. Baking soda is an odorless, powdered chemical compound called sodium bicarbonate (NaHCOз). NaHCOз is most commonly used in baking as a…

titration. A chemical reaction occurs when two or more substances change to form different molecules. In each reaction there are ratios between each reactants. Certain amounts of each reactant are needed to fully complete the chemical reaction. Stoichiometry is the relationship between the quantities of the reactants. An acid is a substance that reacts and donates H+ ions. A base is a substance that accepts H+ ions. An acid that donates more that two H+ ions is polyprotic. In a reaction where an…

Identifying Unknown Substance. Examining the physical characteristics of the available compounds in the lab was how possible compounds were eliminated from any or further testing. Based on how the compounds physically looked, it was almost for certain that calcium chloride was the unknown compound. However, another compound was used to test as well (ammonium chloride) since relying only on physical characteristics alone would not allow for proper experimentation. The unknown ended up being…

I request to take AP Chemistry because I want to major in Biomedical Engineering. By taking AP Chemistry, I will be a step closer for preparation of my future profession. This year as a sophomore I am taking AP Biology, AP Psychology, Honors Pre-Calculus, Physics 1, and Chemistry 1 simultaneously without any issues or problems. I also have taken AP United States History as a freshman along with seven other courses. Because of this, I understand the demanding nature of these AP courses and the…

procedures such as endoscopy. Another important factor physical science has to medicine is in the MCAT. The test is broken down into 4 components, and one of them is Chemical & Physical Foundation of Biological Systems. Subjects can vary from Stoichiometry, Acids and Bases, Waves and Sound, and many other physical science subjects. Students may decide to enter an MCAT Prep Class to further study the Chemical & Physical components. Though this course is not a necessity, it is offered to help or…

together causing a chemicals reaction. Also in chemistry is a law called the Law of Conservation of Matter which is used to determine chemical composition in compounds and chemical reactions. To determine this you would need to use a process called stoichiometry. (SC1) Pharmaceuticals is the production, engineering, and manufacture of medicines and drugs likewise this is…

deficient boron atom to the carbonyl oxygen.1 The reaction is shown below: 10 is 9-fluorenone, 11 is the intermediate borate salt, and 12 is 9-fluorenol. 2 Experimental Before coming into the lab, a stoichiometry table was created with information for each reagent and product. Table 1: Stoichiometry Table Reagents Mass/Volume Molecular Weight (g/mol) Moles Mole Ratio 9-fluorenone 0.6 g 180.20 0.0033 2.5 NaBH4 0.05 g 37.83 0.0013…

test tube turned gold yellow with some purple color, that test tube was the crude product, The final test tube was gold yellow, that test tube had the final product pure aspirin. For the percent yield, the product we obtained was 1.98 g. and the stoichiometry product was 2.71 g. giving us the percent yield of…

Molar Volume of a Gas Lab The purpose of the lab was to do an experiment to determine the molar volume of hydrogen gas at standard temperature and pressure, or STP. To start the experiment, a beaker was filled with water and then a cage was created with a copper wire. A piece of magnesium was cut and placed inside the cage in order to keep the reaction going until all of the magnesium reacted with the hydrochloric acid. The eudiometer tube was filled with 15 mL of hydrochloric acid and water…

Introduction Although, in general, salts are known for their solubility, not all types of salts completely dissociate in water. Some of them partially dissociates and creates a dynamic equilibrium due to the instances when their ions recombine to form the original salts. An example of this is potassium hydrogen tartrate (KHC4H4O6 or KHT). When KHT is placed in water, it partially dissolves and forms K+ and HC4H4O6- ions. This reaction is shown below: KHC_4 H_4 O_6 (s)⇄ K^+ (aq)+HC_4 H_4 O_6^-…