reactant because the reactant in short supply limits the quantity of the product formed. Stoichiometry will be used to calculate the theoretical yields of each compound to find the limiting reactants or if co-limitation
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I. Introduction The Percent Yield lab is designed to further the students’ understanding of percent yield by having them predict how much material will be produced from a reaction; specifically a double replacement reaction. In order to perform the lab‚ a solid understanding of percent yield is necessary. According to Prentice Hall Chemistry book‚ percent yield is comprised of two main components. The first is the theoretical yield. The theoretical yield is what is calculated and predicted. It is
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Limiting Reagent and Percent Yield Aim To determine the limiting reagent between the reaction of lead (II) nitrate and potassium iodide. To determine the percent yield of lead (II) iodide. Date Started: 13/4/12. Finished: 19/4/12. Data collection and processing Measurements: * Amount of distilled water: 75.0ml ± 0.5ml. * Mass of watch glass: 31.65g ± 0.01g. * Mass of watch glass + potassium iodide: 32.45g ± 0.01g. * Mass of potassium iodide: 0.8g ± 0.02g. * Mass of watch
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In the Stoichiometry Challenge Lab we compared the theoretical results of the reaction between sodium carbonate (Na2CO3) and sulfuric acid (H2SO4) with the actual data we found. I hypothesised that If the mole ratio between Na2SO4 and H2SO4 is 1:1 then when I react 0.5 grams of Na2SO4 (reactant with H2SO4) I should get 0.669 grams of Na2SO4. The actual reaction between .05 grams of Na2CO3 and 5 mL of of H2SO4 produced 0.79g of Na2SO4. When I were testing the reaction‚ I measured out the reactants
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Data Collection and Processing Aspect One -2.00grams of Sr(NO3)2 used -2.00grams of CuSO4 -Reactants: Sr(NO3)2 and CuSO4 Trial Mass of Beaker (g) Mass of Beaker with Sr(NO3)2 (g) Mass of Beaker (g) Mass of Beaker and CuSO4 (g) Mass of Filter Paper (g) Mass of Filter Paper and Contents (g) 1 111.08±0.01 113.08±0.01 111.1±0.01 113.1±0.01 1.28±0.01 2.93±0.01 2 111.1±0.01 113.1±0.01 111.23±0.01 113.23±0.01 1.27±0.01 2.98±0.01 3 111.26±0.01 113.26±0.01 111.09±0.01 113.09±0.01 1.27±0.01
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Stoichiometry Lab Stoichiometry is the end result of adding up chemical elements that were involved in chemical reactions (http://dictionary.reference.com/browse/stoichiometry). The word stoichiometry was obtained from two greek words meaning element and measure. This explains the definition for the term. A chemist named Jeremias Benjamin Richter was the chemist responsible for first realizing what stoichiometry was (http://www.chemteam.info/Stoichiometry/What-is-Stoichiometry.html). In 1972
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purpose of this lab is to use one of the ways to identify different compounds and be able to tell them apart. Based off of experimentation‚ the empirical formula of the given silver oxide will be determined. Materials: Chemicals: Silver Oxide‚ 0.5g Equipment: Balance‚ 0.001-g or 0.0001-g precision Bunsen Burner Clay pipestem triangle Crucible and cubicle lid‚ 15- or 30-mL Crucible tongs Ring stand and ring clamp Watch glass Wire gauze with ceramic center Pre Lab Questions 1
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yield each trial obtained for the CaCO3. Pre-Lab Questions 1. A limiting reagent is one that is used up first out of the reagents that are used. This substance determines how much actual product is made 2. CaCl2: 7.15 g x 1 mol / 111.0 g = 0.06 mol CaCO3 K2CO3: 9.25 g x 1 mol / 138.2 g = 0.07 mol CaCO3 CaCl2 is limiting reagent Theoretical yield = 0.06 mol CaCO3 x 100 = 6.40 g CaCO3 Percent yield = 6.15 g / 6.40 g = 96.1 % Post-Lab Questions 1. In this first trial‚ I saw that there was
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Stoichiometry lab 1 Purpose: The purpose of this lab is to find the limiting reactant‚ also to find the percentage yield and percentage purity of the reaction that happens between Calcium Chloride and Sodium Carbonate. The other purpose was to know how the reaction can be balanced and created. Hypothesis: In this lab we are going to see a precipitation reaction. This is a reaction where two soluble salts Sodium Carbonate and Calcium Chloride are added together and the result is the precipitation
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LMounika Alluri Chemistry HL Block D 19/9/12 LAB REPORT #1 LIMITING REAGENTS INVESTIGATION Aim: To determine the limiting reagent and percent yield of the reaction between potassium iodide with lead (II) nitrate solution. Apparatus required: Safety glasses‚ funnel stands‚ watch glass‚ oven‚ electronic balance‚ wash bottle with distilled water‚ test tubes‚ 10.0mL 0.50M lead (II) nitrate‚ 10.0mL 0.30M of potassium iodide solution‚ two 100.0 mL beakers‚ funnel‚ filter paper. Reaction
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