BACK TITRATION AIM - To estimate volumetrically the amount of calcium carbonate present in the eggshell and analyzing the sources of errors to evaluate the result. Part A: Standardization of 2M NaOH(aq) Data Collection : Weight of substances Uncertainty Weight of watch glass + salt (potassium hydrogen phthalate) w1= 23.4380g ± 0.001g Weight of watch glass ( after emptying the salt)w2 = 21.5430g ± 0.001g Weight of salt (potassium hydrogen phthalate) w1 –w2= (23.4380± 0.001g) – (21
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A Study of the Vinegar Fermentation1 March 18‚ 2013 -------------------------------- 1 A scientific paper submitted in partial fulfillment of the requirements in HNF 12 laboratory‚ 2nd sem.‚ 2012-2013. OBJECTIVES 1. To enumerate the principle and methods in fermentation; and 2. to identify the factors that affect the efficiency of fermentation. INTRODUCTION Vinegar has been traditionally used as a food preservative. Vinegar retards microbial growth and
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Chemistry Experiment Double Indicator Titration 1 Aim The purpose of this experiment is to find the composition of a sample of sodium carbonate mixture by titration. Introduction The reaction between sodium carbonate and hydrochloric acid occurs in 2 stages‚ with the formation of hydrogen carbonate ion as the intermediate product. Na2CO3(aq) + HCl [pic] NaHCO3(aq) + NaCl(aq) NaHCO3(aq) + HCl(aq) [pic] NaCl(aq) + H2O(l) + CO2(g) [pic] Requirements Hydrochloric
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Maddie Sanchez 5-13-13 Period 5 I. Title: Titration Lab II. Purpose: To determine the concentration of an acid or a base exactly by neutralizing the acid or base with an acid or base concentration. III. Materials: The materials needed are a burette‚ boat dish‚ soap‚ beaker‚ ring stand‚ clamp‚ funnel‚ phenolphthalein (indicator)‚ scale‚ 250 mL flask‚ distilled water‚ stirrer‚ acid‚ and base. IV. Procedure: This lab was done in two days. On day one the first thing
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Vinegar Titration Lab Procedure: 1.) Obtain ~100 mL of NaOH. Record the molarity on the data table. 2.) Set up a ring stand with a buret. 3.) Place 5mL of vinegar in a 125 mL Erlenmeyer flask. Dilute the vinegar with 25 mL of water and add two drops of phenolphthalein. 4.) Fill the buret with NaOH. Record the initial volume of the buret in your data table. 5.) Titrate the vinegar sample until the first faint pink color does not disappear. 6.) Record the final volume of the buret in your data
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Stephanie Thao Chemistry 1151 Laboratory Analysis of acid by titration with sodium hydroxide Ms. Hoang November 2012 Introduction: The purpose of this experiment is to demonstrate an example of how to determine the unknown molarity of hydrochloric acid by titration with a base (sodium hydroxide). Titration is a common laboratory method of quantitative chemical analysis that is used to determine the unknown concentration of an identified analyte (wekipedia). The first step will be measuring
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Pineapple Peelings as Vinegar TABLE OF CONTENTS Title Page Abstract…………………………………………………………... 1 Research Plan……………………………………………………..2 Introduction…………………………………………………..2 Statement of the Problem……………………………………..2 Significance of the Study……………………………………..2 Scope‚Delimitation and Limitations…………………………..2 Definition of Terms……………………………………………3 Review of Related Literature………………………………………4 Methodology………………………………………………………5 Materials……………………………………………………….5 Procedures……………………………………………………
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Investigatory Project (Pineapple Peelings to Vinegar) Introduction A. Background of the Study A Pineapple is a fruit wherein you have to peel off the peelings to eat it‚ like any other fruits. The researchers chose this as their project to prove that Pineapple peelings have other uses. The researchers also noticed that the families in our country are very practical nowadays. Instead of throwing the peelings away‚ many families can earn something from it by using our experiment. They can produce
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Vinegar Girl by Anne Tyler is a 2016 retelling of William Shakespeare’s Taming of the Shrew. The book was published as part of the “Hogarth Shakespeare” project by Random House. Tyler’s protagonist‚ Kate Battista‚ is just as strong-willed as Shakespeare’s Katherina. Likewise‚ both protagonists are prickly with those around them. Tyler opens Vinegar Girl with Kate in her garden her father‚ Dr. Battista‚ calls her on the phone. He forgot his lunch and would like her to bring it to him. Kate agrees
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How often do you use apple cider vinegar? If you like making yourself a huge bowl of crunchy salad‚ you probably drizzle some over the top‚ or shake it well in your dressing jar. However‚ apple cider vinegar is a lot more than a vinegary thing that is added in salads. Some claim it to be the most efficient cleaning product‚ and others praise it for its brilliant healing properties. Apple cider vinegar is an amazing and inexpensive all-purpose cleaner‚ you can add some in your drinking water or
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