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    Determining the Limiting Reactant and Percent Yield in a Precipitation Reaction Objectives: Observe the reaction between solutions of sodium carbonate and calcium chloride. Determine which of the reactants is the limiting reactant and which is the excess reactant. Determine the theoretical mass of precipitate that should form. Compare the actual mass with the theoretical mass of precipitate and calculate the percent yield. Materials: Balance 0.70 M sodium carbonate solution‚ Na2CO3(aq)

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    Reactants Lab

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    Experiment 8 Chemical Kinetics Abstract This experiment was done to determine the effects of the nature of the reactants‚ concentration‚ temperature‚ surface area and catalyst on the rate of chemical reactions. The nature of the reactants implies a difference if the reactants are aqueous or organic‚ acidic or basic or if they occur in the same phase or not. Acid-base reactions‚ formation of salts‚ and exchange of ions are fast reactions while reactions in which large molecules are formed

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    Discussion: For this experiment to occur‚ the limiting and the excess reagents needed to be determined. The limiting reagent was picked based upon the single displacement that was going to occur when the two substances‚ iron and copper(II)sulfate‚ were mixed together in water. Seeing that iron was going to displace copper and take its place‚ it was chosen to be the limiting reagent with the condition that if it was in excess then after the displacement was completed‚ there will be iron precipitate

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    Stoichiometry and Limiting Reagents Theodore A. Bieniosek I. Purpose and Theory The purpose of the experiment is to study and apply the processes of stoichiometric calculation on a controlled chemical reaction. We will be adding variable amounts of reactants in a chemical reaction in order to demonstrate the effect of limiting reagents. Based on the volumes of the reactants‚ and their respective molarities‚ we can calculate the theoretical yield of the reaction and compare it to the

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    and see if a precipitate or gas forms between any of these reactions. Research 1. Table A Reactants in Aqueous Solutions Predictions (1) MgCl₂(aq) + 2NaOH(aq) Mg(OH)₂(s) + 2NaCl(aq) (2) FeCl₃(aq) + 3NaOH(aq) Fe(OH)₃(s) + 3NaCl(aq) (3) 2KCl(aq) + Na₂SO₄(aq) K₂SO₄(s) + 2NaCl(aq) (4) CaCl₂(aq) + 2AgNO₃(aq) Ca(NO₃)₂(s) + Ag₂Cl(aq) (5) CuSO₄(aq) + Na₃PO₄(aq) Cu₃PO₄(aq) + Na₂SO₄(s) 2. Table B Reactants Predictions (1) Na₂CO₃(s) + 2HCl(aq) NaCl(aq) + CO₂(g) + H₂O(l) (2) NH₄Cl(s) + NaOH(aq) NaCl(aq)

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    Different Reactants

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    Experiment 2: The Effect of Different Reactants on the Type of Gases Produced Abdul Aziz Malik Submission Date: 18th April 2012 Background Information In the experiment‚ when oxygen is being tested‚ a glowing splint will be used and when that splint is placed in to the mystery gas and the splint reignites‚ then the gas is oxygen. When hydrogen is being tested‚ a burning splint will be used and when the splint is placed in to the mystery gas and a “pop” sound occurs‚ then the gas is hydrogen

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    LIMITING REAGENT Practice Problems 1. At high temperatures‚ sulfur combines with iron to form the brown-black iron (II) sulfide: Fe (s) + S (l) ( FeS (s) In one experiment‚ 7.62 g of Fe are allowed to react with 8.67 g of S. a. What is the limiting reagent‚ and what is the reactant in excess? b. Calculate the mass of FeS formed. 2. Arcylonitrile‚ C3H3N‚ is the starting material for the production of a kind of synthetic fiber acrylics) and can be made from

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    By examining one specific example of stoichiometric determination‚ which is: “Stoichiometry and limiting reacting”‚ we found out the different mass proportions in which substance react. In this case‚ we used two common acids for this experiment (HCl‚ and H2SO4) and base NaOH Introduction: For this experiment‚ we use Stoichiometry and limiting reactant. The limiting reactant refers to the reactant that controls the amount of product that is

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    Question 1 (Limiting Reagent) 15.00 g aluminum sulfide & 10.00 g water react until the limiting reagent is used up. [Atomic mass: H = 1.008‚ Al = 26.98‚ S = 32.07‚ O = 16.00] Here is the balanced equation for the reaction: Al2S3 + 6 H2O ( 2 Al (OH)3 + 3 H2S (i) Which of the two reactants is the limiting reagent? (ii) What is the maximum mass of H2S which can be formed from these reagents? (iii) How much excess reagent remains after the reaction is complete

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    Lab Report for the Limiting Factors of the Cedar Glade Mrs. Hall Introduction: In the wild‚ populations are normally controlled by limiting factors that are either biotic or abiotic. These prevent the population from continually growing and reaching their carrying capacity. This experiment will teach one what it is like to study real populations and to help one use and learn the meanings of certain words. Hypothesis: Investigation 1: If both the male and female owl hunt both 2 times a

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