Stoichiometry 04/09/12 Chemistry I B Ms. Norton Introduction/Pre-laboratory Assignment: 1. Write out and balance each of the following equations. A. CuSO4 + Fe Cu + FeSO4 B. 3CuSO4 + 2Fe 3Cu + Fe(SO4)3 2. If Iron (III) Sulfate were formed‚ what mass of Copper would be expected and what is the limiting reagent? C. 2.26 g Cu D. Fe 3. If Iron (II) Sulfate were formed‚ what mass of Copper would be expected and what is the limiting reagent?
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determine the reaction stoichiometry and the valency of magnesium Introduction Stoichiometry is the study of the quantitative relationship between amounts of reactants and products of a reaction. Stoichiometry can be used to calculate the amount of a product formed when given the reactants and a percentage yield. In the case of this experiment‚ a known starting mass of magnesium ribbon and the amount of collected hydrogen gas will be used in order to determine the reaction stoichiometry Magnesium is used
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percent yields will be determined and reported. Objective: To determine the limiting reactant‚ theoretical yield‚ actual yield‚ and percent yield in a chemical reaction between solutions of potassium iodide and lead (II) nitrate. Introduction: Stoichiometry‚ mass‚ and mole relationships have been important throughout the history of chemistry. The simplest whole number relationship between the products and the reactants is a chemical equation. If the masses or number of moles of reactants are known
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Experiment2: Preparation of Dibenzalacetone Aim: Using the cabon-cabon bond making ability in carbonyl chemistry‚ Dibenzalacetone is synthesized from 2 equivalent of benzaldehyde and 1 equivalent of acetone in a base catalyzed reaction. Physical Data1: *detailed risk and safety phrases are attached. substance Hazards‚ risks and safety practices MW (g/mol) Amt. Used Mol. mp (K) bp (K) density(g/cm^3) acetone R11‚ R36‚ R67‚ S9‚ S25‚ S26 58.08 0.24 g 0.004 178.2 329.4 0.79 benzaldehyde R22
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CHEMISTRY Safety‚ Matter‚ and Measurement Lab Safety Dress appropriately Follow directions and act appropriately Know where emergency equipment is MSDS Material Safety Data Sheets- contain safety information about chemicals Converting metric units Kilo Hecto Deca Base Deci Centi Milli 1000 100 10 1 1/10 1/100 1/1000 Significant Figures NOT Significant Digits “Placeholders”- Zeros before the decimal point and after the number
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The Equilibrium Constant of an Ester Hydrolysis Reaction Julia Stanley CHM 152 LL Dr. Asmita Kane Budruk Goal of the lab: The purpose of this laboratory is to determine the equilibrium constant‚ Kc‚ for the acid-catalyzed reaction between an unknown ester and water to produce an unknown alcohol and an unknown carboxylic acid. I was using Unknown Ester #3 with a density of 0.9342 and Molar Mass of 74.08 g/mol; alcohol with density 0.7914 and Molar Mass 32.04 g/mol. Chemical
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Experiment 4 SOLUTION STOICHIOMETRY ACID-BASE TITRATIONS Determination of the Percent Acetic Acid in Vinegar Objectives: (1) To introduce and use the concept of solution stoichiometry (2) To specifically use solution stoichiometry to determine the percent of acetic acid in vinegar. (3) To prepare a standard solution by the method of titration. Consider the following balanced chemical equations: (1) HCl + NaOH ------> NaCl + HOH (2) H2SO4
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simply cross-check your homework questions with this Question Bank and wrap up your homework in record time! Chemistry Some Basic Concepts of Chemistry Mass and Stoichiometry Chemistry > Chapter: Some Basic Concepts of Chemistry > Mass and Stoichiometry Chapter: Some Basic Concepts of Chemistry Mass and Stoichiometry Question 1 2.5 moles of sulphuryl chloride were dissolved in water to produce sulphuric acid and hydrochloric acid. How many moles of KOH will be required to completely
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Stoichiometry • Calculations involving quantities of consumed reactants and formed products based on a BALANCED chemical equation. Mass Molar Mass Mole Coeff Bal Eqn Mole Molar Mass Mass Example 2 • The Haber Process involves reacting gaseous nitrogen and gaseous hydrogen to form ammonia. Determine the mass in grams of hydrogen gas required to form 1.00 x 103 g ammonia. Your Turn 2 • If you react 52.9 g of potassium chlorate (KClO3) with excess phosphorus
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to describe the reactions and observations from the laboratory activity. Lesson 4.06: Stoichiometry Explain what the coefficients in a balanced equation represent and how they can be used in ratios. Use coefficients from a balanced equation as a mole ratio in dimensional analysis calculations. Solve a variety of stoichiometry calculations involving moles and mass. Use volume and density in stoichiometry calculations (honors). Lesson 4.07: Limiting Reactant Identify when a problem
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