9 Experiment A Volumetric Analysis A titrimetric analysis requires the careful addition of titrant. • To prepare and standardize a sodium hydroxide solution • To determine the molar concentration of a strong acid Objectives The following techniques are used in the Experimental Procedure Techniques 2 4 16b 16a 90 80 5 16c 6 13c 15a 15b ! A chemical analysis that is performed primarily with the aid of volumetric glassware (e.g.‚ pipets‚
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NO | ANSWER | MARK | 1 :( i )( ii ) ( iii ) ( iv )2 :( i )( ii )( iii )3 )4 )5 ) ( i )( ii )( iii )( iv )6 )7 ) i )ii ) iii )8 )9 )10 )i ) ii )iii)11 ) | A reagent is highly serves as a reference material in all volumetric & mass titrimetric method.A reagent solution of accurately known concentration. * End point-point at which the reaction is observed to be complete and there is permenant colour change at the end of titration. * Equivalent point-point at which an equivalent amount of
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up of gastric acid (HCl). In order to determine which antacid is the more effective‚ four different brands of antacids were chosen‚ and tested. The purpose of an antacid is to balance out the pH inside a person’s stomach. PH is the measurement of molar concentration of hydrogen ions that are present in the solution (N. Tro‚ 733-735). If this experiment were to be repeated‚ it would be to show which antacid would be more effective to buy as a consumer. In this experiment an antacid is dissolved in
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Sandeep Voleti- Period 4/5 Honors Chemistry Titration Lab Writeup Introduction Titration is a method‚ which is meant to find the concentration of either an acid or a base by adding a measured amount of it to a known volume and concentration of an acid or base1. Titration starts with a beaker or Erlenmeyer flask containing a very precise volume of the known concentration solution and a small amount of indicator‚ which is put underneath a burette containing the solution with unknown concentration1
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Reactions 1 and 2 based on A is 80% Column specifications: Light key = A Heavy key = B Mole-recovery of B in bottom = 98% Process Feed: Molar flow rate of A in feed = 100 lbmol/hr Molar flow rate of B in feed = 150 lbmol/hr Other information: Mole fraction of A in column overhead = 24.06% Total molar flow ratio of stream S5 to S4 = 9.26 3 Molar ratio of component
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GRAAD 12 NATIONAL SENIOR CERTIFICATE GRADE 11 PHYSICAL SCIENCES: CHEMISTRY (P2) EXEMPLAR 2013 MARKS: 150 TIME: 3 hours This question paper consists of 13 pages‚ 1 data sheet and a periodic table. Copyright reserved Please turn over Physical Sciences/P2 2 NSC – Grade 11 Exemplar DBE/2013 INSTRUCTIONS AND INFORMATION 1. Write your name in the appropriate space on the ANSWER BOOK. 2. This question paper consists of TWELVE questions. Answer ALL the questions in the ANSWER BOOK. 3. You
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INTERNATIONAL BACCALAUREATE ORGANIZATION DIPLOMA PROGRAMME Chemistry For first examinations in 2003 http://www.xtremepapers.net Chemistry February 2001 © International Baccalaureate Organization 2001 International Baccalaureate Organization Route des Morillons 15 1218 Grand-Saconnex Geneva‚ SWITZERLAND CONTENTS PART 1—GROUP 4 INTRODUCTION 1 CURRICULUM MODEL 3 AIMS 6 OBJECTIVES 7 ACTION VERBS 8 INFORMATION AND COMMUNICATION TECHNOLOGY (ICT)
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CHAPTER 4 REACTIONS IN AQUEOUS SOLUTION MULTIPLE CHOICE QUESTIONS 4.1 Which of the following compounds is a strong electrolyte? E A. H2O B. O2 C. H2SO4 D. C6H12O6 (glucose) E. CH3COOH (acetic acid) Answer: C 4.2 Which of the following compounds is a strong electrolyte? E A. H2O B. N2 C. KOH D. C2H6O (ethanol) E. CH3COOH (acetic acid) Answer: C 4.3 Which of the following compounds is a weak electrolyte? E A. HCl B. CH3COOH (acetic acid)
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References: ’ (Zhuravlev and Kiselev‚ 1970) Figure 10.12. Differential enthalpies of adsorption of argon and nitrogen on a mesoporous silical gel: effect of outgassing at different temperatures (Rouqueml er al.‚ 1979b).
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Analysis of Commercial Vitamin C Tablets Aim: To employ iodometric titration to determine the content of vitamin C in commercial tablets using volumetric analysis and compares it with the manufacturersÂ’ specifications. Introduction Vitamin C is an essential substance for maintaining good health and it is proved to be the agent which prevents scurvy. Most animals can synthesize their own vitamin C‚ but some‚ such as human cannot. Owing to the increasing concern for oneÂ’s health
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