In the fume hood‚ approximately 2g of Ca(OH)2 was dumped from a vail into a 250ml beaker. To avoid any left-over Ca(OH)2 inside the vail‚ certain amount of distill water wad added to it‚ and the vail was shook several times after the lid was closed. Pouring the solution in the vail into the beaker‚ and add distill water until it reached the 100ml line. Then‚ the beaker was put on top of a magnetic stir with a magnetic stir bar placed in it. Turning on the magnetic stirrer and allowing the stir bar
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REPORT ON WORK EXPERIENCE AT OSHO CHEMICAL INDUSTRIES (DATES: 3/12/2012 T0 10/12/2012) To: Mr. Harish Tolia From: rohan pathak Date: 06/01/2012 Subject: work experience After I finished my AS level exams‚ I knew I wanted to do chemical engineering‚ so I asked my dad to get me a place where I can learn a little about it and luckily my dad knew Mr. Manoj Shah who is the owner of Osho Chemical Industries Ltd. So I went there on the 03/12/2012 to get some experience. I met the product development
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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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Unit 4B Task 2 Title Recrystallization of benzoic Acid Aim Equipment 1. Erlenmeyer flask 2. Graduated cylinder 3. Hot plate 4. Small beaker 5. Ice bath (if necessary) 6. Filter paper 7. Buchner funnel 8. Spatula 9. Weighing machine Method 1. Weighing paper was used to weigh approximately 1.00g of ‘impure Benzoic acid to produce re crystallization’. 2. Moved it to a 125ml Erlenmeyer flask. 3. Poured approximately 20ml of distilled water by using a graduated cylinder
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Investigation of pH titration curves (Topic 8) Criteria Assessed: DCP‚ CE Time allowed: 1.5h Name: ________________________ Internal Assessment Criteria Aspect 1 Aspect 2 Aspect 3 Total DCP CE Aim: The aim of this practical is to plot and investigate the pH titration curves for the titration of a strong acid with a strong base and of a weak acid with a strong base‚ and find Ka of the weak acid. Procedure: Part I 1. Pour 30 ml of the HCl solution of unknown concentration in a 100 ml beaker
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Example Lab Report Experiment 4 1. Judith Anthony‚” Strong Acid/Strong Base Titrations”‚ CHEM 1130‚ T.A-Joseph Kreft‚ Tuesday 8am‚Room 1871‚Donna Ellitnorpe. 2. Purpose of this experiment: The purpose of this experiment is to observe the neutralization reaction that occurs between strong acid and strong base solutions. The technique of titration is used to observe the acid content of the fluid in a car battery. 3. Procedure: Calculate the volume of 6.00 M NaoH that is needed
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In this lab‚ the pH of flat sprite and a fresh sprite are compared two ways: one way was to record the pH directly with a digital pH probe and the other was to calculate the concentration through titration. Because the reaction is a neutralization reaction‚ the concentration of can be calculated if the concentration of is known. At the end of the titration‚ the moles of will equal the moles of and the pH is expected to be greater than 7 because the found in sprite is weak and is a strong
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According to the Beer Lambert law‚ the concentration of the solution is directly proportional to the absorbance. The extinction coefficient relates the absorbance to concentration. It is specific for each individual compound and can be determined from the standard calibration curve by solving for ε‚ as I know the absorbance and concentration and can measure the width of the cuvette. Abs = ε bc In this equation‚ the absorbance is equal to the concentration of the CaCl2 (c)‚ multiply by the length
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Figure 3 Superoxide radical scavenging activity. Values are mean ± SEM (n = 3). ABL‚ lyophilized aqueous extract of A. bilimbi fruits; ABP‚ petroleum ether fraction of ABL; ABE‚ ethyl acetate fraction of ABL; ABB‚ butanol fraction of ABL; ABW‚ aqueous fraction of ABL; QU‚ quercetin. 3.3.5 Nitric oxide radical scavenging activity Lyophilized aqueous extract of Averrhoa bilimbi fruits (ABL) and its different solvent fractions exhibited a dose dependent inhibition of nitric oxide radicals. The IC50
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Succulence was determined according to the following equation: Succulence = Fresh Weight/Oven Dry Weight…………………........................................................(1) Measurement of Relative Water Content (RWC%);Relative Turgidity (RT %): Relative water content was estimated according to a modification of the method of Weatherly (1950); Weatherly and Barr (1962); Slatyer (1957);Fletcher et al. (1988)on the final day of the experiment and was calculated by the formula given byKramer (1983).Detached
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