Stoichiometry

Lab 1: Effect of pH on sodium benzoate, a food preservative Sheikh M Zakaria Person no. 36295651 TA: Synthia Gratia Date of Submission: 05/29/13 Abstract Sodium Benzoate is a common food preservative used in food products such as jams and jellies, soft drinks, pickles, condiments etc and in tinned products in the market. This experiment aimed to determine whether benzoic acid is formed from it’s superior soluble form sodium benzoate in stomach acid, which is simulated by HCl (pH=2). It has

Raghed Odeh Chemistry 227 11/08/2017 Which Alkali Metal Carbonate? Abstract In this experiment, the unknown metal carbonate was put in three different experiments to determine which substance the unknown carbonate had. Gravimetric analysis, simple weight loss and a flame test were done to help determine the unknown metal. The end results supported that the metal was Lithium with a 78.125 g/mol for the first method, a 60.08 g/mol for the second method and a red color for the third method. Introduction

Purpose: To perform a reaction and analyze the results using stoichiometry. Materials & Safety: • 3M Hydrochloric Acid (HCl) • Centigram Balance • Aluminum Foil • Weigh Boat • 100 mL Beaker • 50 mL Graduated Cylinder • Safety Googles • Apron Procured: Step 1: Put on safety googles and apron. Step 2: Obtain approximately .25 grams of Aluminum Foil and make observations of the foil. Record the exact mass in your data table. Step 3: Obtain 50.0 mL of 3 M HCl using a graduated

Objective The purpose of this experiment was to use stoichiometry to calculate the volume and percent yield of CO₂ produced from a reaction of acetic acid (vinegar) with baking soda. Procedure First the balloon was weighed on its own, and its mass was 2.8 grams. Then the container with the sample of baking soda was weighed and its mass was 14.0 g. The baking soda was then placed into the balloon and the mass was 6.4 g. Lastly, the container minus the baking soda was weighed in order to

Calculating Quantities and Classification of Chemical Reactions Lab Purpose: I. The objective of this laboratory experiment is to be able to identify and precisely classify each reaction as one of the five different types of chemical reactions by comparing the reactants from the product. II. The purpose of this laboratory experiment is to accurately calculate quantities of the products and the reactants, Aluminum and Copper (II) Chloride, in the chemical reaction to determine its percent yield

The objective of the experiment is to examine various reactions involving acetylsalicylic acid, such as the synthesis of acetylsalicylic acid and the synthesis of methyl salicylate. Procedure Part A- Acetylsalicylic Acid (Aspirin) • In a 50 mL Erlenmeyer flask, 1.4 g (0.1 mol) of salicylic acid and 3 mL (3.1 g, 0.03 mol) of acetic anhydride were placed, using the acetic anhydride to wash any salicylic acid from the walls of the flask. Afterwards, 5 drops of phosphoric acid were added, which activated

What is Stoichiometry? In Chemistry, calculations that relate different quantities of substances (eg. Mass, Moles) are involved in Stoichiometry. Stoichiometry is a study involving measurable or quantitative relationships that exists in chemical reactions. The term was derived from Greek word stoicheion meaning element and metron as measure. The topic focuses on the relationships between moles, mass and particles. Mole is a unit that defines the amount of a substance that contains different chemical

Chem 201 Lab October 21, 2011 Lab #6: Preparation of 2-chloro-2-methylbutane – an Sn 1 Reaction Purpose The purpose of this experiment was to prepare an alkyl halide, 2-chloro-2-methylbutane by reacting 2-methyl -2-butanol (t-amyl alcohol) with hydrochloric acid. Alkyl halides are of wide interest because they are widespread and have diverse beneficial and detrimental impacts .The overall reaction is given below: Procedure 1 ml of 2-methyl-2-butanol was measured using 1 ml syringe and

Stoichiometry- a subject of chemistry, the calculation of quantities in chemical reactions Stoichiometric Calculations- calculations using balanced equations -Chemists use balanced chemical equations as a basis to calculate how much reactant is needed or product is formed in a reaction -A balanced chemical equation can be interpreted in terms of different quantities, including numbers of atoms, molecules, or moles; mass; and volume -Mass and atoms are conserved in every chemical reaction (cules/formula

STOICHIOMETRY There is no Chemistry without Stoichiometry. It is nothing but calculations using fundamental concepts of balanced chemical equations and using reactant-product mole ratio. If mass or gaseous volume of one of the reactants or products in a chemical reaction is known, mole(s) or mass or gaseous volume of a reactant or product can be calculated involving the mole ratio of a chemical equation. Before understanding Stoichiometry Chemistry, we need to know certain relationships among