are the slower rate of movement.1 2.3. The aim of this investigation is to evaluate the process of Osmosis and Diffusion on different concentrations of sodium chloride on a de-shelled chicken egg over a period of 24 hours. 2.4. My hypothesis relating to this investigation is that the de-shelled eggs in different sodium chloride solutions will absorb the water through the process of osmosis which will cause the eggs to increase both their weight and size. 2.5. The outcome
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Part Ca)Up until the 1940’s rubber had only been obtained from the latex of rubber trees(Hevea brasiliensis) in plantations situated in tropical areas such as Malaya and Burma. The demand for rubber increased significantly during world war 2 as rubber was needed for tyres of military vehicles and the supply was interrupted by the conflict between the countries. Scientists in Germany and the US developed synthetic polymers that could replace rubber. Even after the war ended the traditional sources
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Gracen Seiler April 7th‚ 2015 Section- 109 Investigating Stoichiometry with Sodium Salts of Carbonic Acid Introduction- This experiment is intended to help find a better understanding of chemical stoichiometry through titrations of NaHCO3 and NA2CO3 with HCl. A chemical reaction is a process that involves rearrangement of the molecular or ionic structure of a substance‚ as opposed to a change in physical form in a nuclear reaction. Titration is when a measured amount of
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Purpose: The purpose of this lab was to see how given amounts of sodium bicarbonate reacts with acetic acid and see how it creates different amounts of new compounds. Procedure: In this lab‚ we were going to be reacting 12.5g sodium bicarbonate with 7.4mL acetic acid. Before we began‚ we turned on the hot plate to a medium level‚ allowing it time to heat up. While the plate was heating‚ we gathered 1 1/4g sodium bicarbonate onto the balance. Next‚ we measured 7.4mL acetic acid by pouring it into
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LAB REPORT ANDREW O. BAAFI Organic Chemistry I Lab. Instructor: Dr. Strange 09-24-01 TITLE: Preparation of Isopentyl Acetate (isoamyl acetate) / Gas Chromatography (Esterification). REFERENCE: Fischer‚ W. H.‚ A. G. Craig. “Microscale Esterification of Peptides and Analysis by MALDI-MS.” http://www.salk.edu/LABS/pbl/brukeran1.htm. 10-02-2001 Mayo‚ Dana W‚ Pike Ronald M‚ Trumper Peter K. Microscale Organic Laboratory. 3rd ed. New York: Wiley & Sons‚ 1994. Strange De Soria‚ Louise. Chemistry
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Isopentyl Acetate Synthesis Results: Crude % Yield Calculation Reaction: H2SO4 C2H4O2(aq) + C5H12O(aq) ----> C7H14O2(aq) + H2O(l) (1 mole of acetic acid reacts with 1 mole of isopentyl alcohol to make 1 mole of isopentyl acetate and 1 mold of water) Volume of isopentyl alcohol (d=0.809g/mL; MW=88.15g/mol): 2.5mL Moles of isopentyl alcohol: (2.5mL)(0.809g/1mL)(1mol/88.15g) = 0.02294mol Volume of glacial acetic acid (d=1.06g/mL; MW=60g/mol): 3.5mL Moles of glacial
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Synthesis of Isopentyl Acetate Abstract The purpose of this experiment was to produce isopentyl acetate‚ banana oil. Acetic acid and isoamyl alcohol were used to synthesize isopentyl acetate. The techniques used for the separation and purification of isopentyl acetate were reflux‚ liquid-liquid extraction‚ neutralization and distillation. The identification of isopentyl acetate was based on boiling points and an infrared spectrum. This experiment resulted in a 11.68% yield. The reactants
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Seung Soo (Jason) Lee 002213-065 Internal Assessment – Investigating the Relationship between Concentration of Sodium Chloride and the Rate of Reaction of Enzyme Amylase Research Question: How will changing the percentage of sodium chloride concentration affect the rate of reaction of enzyme amylase‚ measured using the absorbance of starch and iodine with a spectrophotometer. Introduction: Amylase is an enzyme that is involved in the human digestive process. Found in both the human pancreas
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Institute Introduction The Consulting Chemists Institute was contracted by a local food manufacturer to determine if sodium benzoate‚ a common food preservative‚ undergoes significant chemical changes at the pH level encountered in the acidic environment of the stomach. Experimental Method Sodium benzoate was prepared by addition of an equimolar amount of aqueous sodium hydroxide (3 M‚ ~ 20 ml) to a benzoic acid (1.256 g‚ 10.3 mmol) /water mixture (10 ml). Benzoic acid is insoluble in water
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“organic” means present in‚ or derived from‚ plants and animals. Materials/ Apparatus: Bunsen burner‚ 3 test tubes‚ test tube holder‚ dropper‚ red litmus paper‚ albumin (cystine)‚ sugar (sucrose)‚ urea‚ soda lime‚ 1% sodium hydroxide‚ hydrochloric acid‚ 5% lead acetate Procedure A: Testing for Carbon‚ Hydrogen and Oxygen 1. 1g of sugar (sucrose) was placed in a dry test tube. 2. The test tube was heated in an inclined position. 3. Observations were recorded
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