The NaHCO3 is the limiting reactant and the HCl is the excess reactant in this experiment. Determine the theoretical yield of the NaCl product‚ showing all of your work in the space below. (5 points) 12.71 NaHCO3 / 84.01 g/mol = 0.1513 moles 0.1513 moles * 58.44 g/mol (NaCL molar mass) = 8.84197 g What is the actual yield of NaCl in your experiment? Show your work below. (4 points) 31.52 g 24.35 g = 7.17 g Determine the percent yield of NaCl in your experiment‚ showing all work neatly in the space below. (5 points)
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PART I PHYSICS & CHEMISTRY EXAMPLE FOR DIFFERENT TYPES OF QUESTIONS Instruction: The Question cum answer booklet contains 39 questions including sub question of match the following and main questions. 1. Due to heavy traffic near the school the department of traffic police wants to install automatic traffic lights. This am be done by using the Principle of a) Raman effect b) Radiography c) Holography d) Photoelectric effect 2. Water is to be sterilized for drinking purpose without using any chemicals
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Thermochemistry Heat of precipitation - precipitate is unsoluble salt - precipitate must be prepared through double bond decomposition or precipitation method Do you still remember what is meant by double bond decomposition? [please refer to salts notes] General equation double bond decomposition/precipitation; Ionic equation for precipitation reaction. Salt Solubility in water Li+‚ Na+‚ K+‚ NH4+ All salt dissolve in water Nitrate‚ NO3- All nitrate salt
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Kristina Todorovic Chemistry 203 DEN Dr. Mohamed El-Maazawi Part A. Acid-Base Indicators Purpose In this part of the experiment‚ we will find a reagent that will shift the acid-base equilibrium reaction described by Equation (2) in one direction and then a second reagent that will cause the equilibrium position to shift back in the opposite direction. Introduction An acid–base indicator is a substance that changes color as the pH of a solution changes. Consistent
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TITLE: Water Based Drilling Fluid Analysis EXECUTIVE SUMMARY: Analysis of drilling fluids is essential to their performance. In this laboratory exercise the aim is to test three drilling fluid samples for; density and rheological properties‚ Fluid loss‚ chemical analysis i.e. testing pH‚ alkalinity‚ testing for chloride ions‚ calcium carbonate‚ calcium‚ bentonite; also determining the amount of solids present in the samples as well as volumes of oil‚ water and solids contained in the sample‚ and
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Analysis of Soda Ash and Carbonate-Bicarbonate Mixture Submitted: February 27‚ 2013 Department of Chemical Engineering‚ Faculty of Engineering University of Santo Tomas España‚ Manila Abstract A standard acid solution like HCl can be used as titrant for the analysis of both soda ash and a carbonate-bicarbonate mixture. In the analysis of soda ash‚ the volume needed to neutralize the soda ash is used to compute for its alkalinity‚ in this experiment we obtained a 17.6 % alkalinity with an error
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Chemical Evolution‚ Water‚ Non-covalent bonds‚ Acid/base‚ pH 1. i) Convert using scientific notation to liters: 4 nanoliters‚ 4 x 10-9 L‚ 20 microliters‚ 2x10-5 L‚ 35 milliliters‚ 3.5 x 10-2 L‚ 10 deciliters‚ 1 L‚ 7 kiloliters 7 x 103 L ii) Convert using scientific notation to grams: 6 mg‚ 6 x 10-3 g‚ 21 µg‚ 2.1 x 10-5 g‚ 503 ng‚ 5.03 x 10-7 g‚ 10 kg‚ 1 x 104 g 2. Which of the following properties of water explains its ability to dissolve acetic acid? (there may be more than one correct answer) a
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Abstract In the asymmetric synthesis of (S)-Ibuprofen‚ the compound is synthesized in nonracemic form directly from an achiral precursor. First‚ racemic ibuprofen was converted to aN achiral ketene via the acid chloride by adding thionyl chloride followed by triethylamine. Then‚ ketene was reacted with a chiral and nonracemic (S)-ethyl lactate produces a mixture of diasteromeric esters of ibuprofen derivatives where (S) configuration is predominantly. Finally‚ hydrolysis of the ester then provides
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K-10 burned yellow orange which indicates NaCl. Solution from test tube K-5 turned red litmus paper to blue which indicates a strong base (NaOH). Solutions in test tubes K-4 and K-6 are both strong acids which turned blue litmus paper to blue. Silver nitrate (K-7) produces precipitate with both acids and Barium nitrate can only produce precipitate with H2SO4 and it remains clear in HCl‚ K-3 precipitated with K-4 but did nothing with K-6‚ which proves that K-4 is H2SO4 and K-6 is HCl. Introduction:
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Analysis of Antacid Tablets Lab Lab date: June 9‚ 2011 Introduction: This lab is designed to provide the student with experience in understanding the principals of acid/base neutralization and to develop the laboratory skill of titration. Procedure: 1. Gather materials: 0.20 M HCl solution‚ 0.20 M NaOH solution‚ 50 ml burette‚ bromophenol blue‚ 150 ml flask‚ electronic scale‚ tripod stand‚ motor and pestle‚ Bunsen burner‚ Tums tablet‚ Rolaid tablet‚ and Equate tablet. 2. Weigh
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