Experiments 4A-C: Synthesis and Component Analysis of an Iron (III) Oxalate Complex My Name TA‚ Section B## Work Performed on 10/23‚ 10/30‚ & 11/4‚ 200# Report due Tuesday‚ November ##‚ 200# 1. Abstract This experiment initially involved the synthesis of an iron (III) oxalate complex with the general formula Kw[Fex(C2O4)y]·zH2O. The variables x‚ y‚ and z were determined through the duration of the entire experiment. From 1.2000g of Fe(NH4)2(SO4)2 were synthesized 1.1###g of K3[FeIII(C2O4)3]·3H2O
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ANALYSIS LABORATORY Experiment IV Redox Titration Name: Helena Al Jawhary / Partner’s Name: Eyad Aridi Instructor’s Name: Dr Juliana El Khoury Date of experiment: 10/3/2013 Redox Titration Objective: • To learn some technique in volumetric analysis: Redox titration. • To review the stoichiometry of an oxidation-reduction reaction. • To practice the titration technique. • To determine the concentration of an unknown sodium oxalate (Na2C2O4) solution by titrating it against
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THE RULES AND REGULATIONS The following safety rules must be observed while performing any of the scheduled laboratory experiments in one of the Chemistry Laboratories. Students who are found in violation of the safety rules will be given a warning for the first offense‚ will be dismissed from the lab room for the second offense‚ and will be withdrawn from the class (lab as well as lecture) for the third offense. If a violation is observed at a particular lab table (such as spilled liquid - water
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Analysis of Commercial Bleach AP Chemistry Introduction: Many commercial products are effective because they contain oxidizing agents. Some products that contain oxidizing agents are bleaches‚ hair coloring agents‚ scouring powders‚ and toilet bowl cleaners. The most common oxidizing agent in bleaches is sodium hypochlorite‚ NaClO (sometimes written NaOCl). Commercial bleaches are created by bubbling chlorine gas into a sodium hydroxide solution (remember this from your “funky redox rxns”?)
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then filter to a 100-mL volumetric flask. 6. Be sure to wash original beaker with water to allow for a quantitative transfer 7. Dilute to the mark on the beaker and mix well 8. Use citrate solution to determine how many drops are needed to make 0.5 mL of the vitamin extract to pH ~ 3.5‚ using the pH paper. (Count the drops; Only need to do this once) 9. Using a micropipette take 0.5 mL of originally diluted solution (vitamin extract) and place into a new 100 mL volumetric flask. 10. Add number
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The Floating Egg Problem Introduction: This experiment was constructed to aid in the practice of using the volumetric system and the glassware that determines volume. Volumetric glassware contains an accurate amount of liquid and also measures the volume accurately. Density is a measure of how much matter takes up a certain amount of space or volume. The more matter you can pack into a certain space‚ the denser it is. Although we often confused the two‚ density and weight are actually two
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of unknown concentration (or vice-versa). The goal of the titration is usually to use the substance of known concentration to determine the concentration of the other substance. In order to run a titration‚ the following materials are needed: • A buret filled with the base (or acid) of known concentration • A beaker or flask containing a measured volume of acid (or base) of unknown concentration • Several drops of a chemical indicator‚ which will be added into the flask with the acid The titration
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Perform the right titration techniques II. Materials A. Reagents Sodium hydroxide (NaOH) pellets Potassium acid phthalate (HKC8H4O4) Phenolphthalein Soft drinks samples B. Apparatus 250-ml beaker 250-ml Erlenmeyer flask 100-ml volumetric flask 50-ml buret 10-ml pipet buret holder Stirring rod triple beam balance Bunsen burner Iron stand and ring wire gauze III. Schematic diagram of the procedure IV. Data and Observations Table 1.1. Preparation of the Sodium hydroxide solution Mass before standing
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measuring its density and using calibration curving showing the density and concertation of standard solution. The procedure used in this experiment was 2 50mL beaker and 10-mL volumetric pipet & pipet pump. 40 mL of deionized water was poured into a 50 mL beaker. Then 10 mL of that deionized water (0% sugar solution) was pipet‚ using the volumetric pipet‚ into the other 50 mL beaker and its weight was recorded. After that another 10 mL of deionized water was pipet into the beaker already containing
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balance‚burette‚ pipette(25ml)‚ volumetric flask(25ml)‚ conicalflask‚ beaker (50ml)‚ and thermometer. PROCEDURE 1. Calibration of volumetric flask (a) A 25ml volumetric flask was cleaned and dried then‚ accurately weighed using analytical balance. (b) The volumetric flask was filled with distilled water and weighed again. (c) The temperature of the distilled water was recorded. (d) From Table 1.1‚ the actual volume of the volumetric flask was determined. 2. Calibration of pipette (a) A 50ml beaker
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