We resulted that lead, silver, and copper are the strongest oxidizing agents, and that magnesium and zinc are the weak oxidizing agents. The strong oxidizing agent oxidized the weak oxidizing agent and in turn the strong oxidizing agent got reduced while oxidizing the weak agent. When a reaction occurred, the solid metal reduced the ion, and in turn made it the more reactive metal. In part two we used a solvent extraction technique to derive an activity series for the halogens. With the use of this technique we placed chlorine, bromine, and iodine into solutions containing chloride, bromide, and iodide.
6. Zinc Sheet: a rectangular, thin, sheet like metal, gray/silver. 6 5 4 3 2 1 * Solubility of solid iodine; 1. Solid iodine in 1 mL of water is slightly soluble, because the solution turns into a light brown/yellow color. However majority of the solid Iodine was left at the bottom of the test tube; which leads to the conclusion that it’s not reactive on water.
In forming covalent bonds where the octet rule is obeyed, sulfur usually forms ________ bonds and chlorine usually forms ________ bonds. A) one; one B) two; two C) one; two D) two; one E) six; seven 6. The number of valence electrons in the acetic acid molecule (CH3CO2H) is ________. A) 0 B) 8 C) 16 D) 24 E) 32 7. A molecule in which the central atom forms three single bonds and has one lone pair is said to have a ________ shape.
ABSTRACT Isopropyltoluene isomers were synthesized through the friedel-crafts alkylation of toluene with 2-chloropropane in the presence of aluminum chloride as a catalyst. Through extraction of the distillate with water and 5% NaHCO3, followed by a fractional vacuum distillation, the desired aromatic organic compound was isolated. Infrared Spectroscopy and Gas Chromatography were used to analyze the composition, purity and to confirm the identity of the prepared product. The sample weighed approximately 2.66g, which reflected a low yield at 47%. However, from the GC the area % (also known as percent purity) was 91.8%, which indicates that a very pure product was obtained.
Dry-Ice Bubbling Acid What are the materials? Ammonia Ammonia (NH3) is a compound composed of one nitrogen (N) and three hydrogen (H) molecules. It is usually found as a gas and is known for its pungent odor. Ammonia is a gas. It is colorless, but has a very distinctive odor.
Zinc ion and Iodine-iodide-triodide ion in water: It was a liquid solution in a bottle, it was very dark orange-brown color. Solid Zinc Iodide: A very white powdery substance that had several clumps within it. It was also very dry in nature. Mass Table Substance Amount of Mass Measured for Actual Mass Granular Zinc 2.0 grams 1.9 grams Iodine Crystals 2.0 grams 2.1 grams Observation of Reaction Shown below and Included within the lab notes on pages 12 and on page 14. Placing Acetic Acid in Zinc and Iodine test tube After placing the Acetic Acid in a normally unreactive test tube containing Zinc and Iodine, the solution changed to a more orange and then to a more red-brown color.
Also a very pale purple tint formed. Acid test: Added 2 mL of 1M NaOH- no Physical change was observed. Base test: Added 2 mL of .17M Acetic acid- No physical change observed. Table: Zinc (g) | Iodine (g) | Deionized water (mL) | Weight of boiling tube (g) | 1M NaOH(mL) | .17M Acetic acid (mL) | 2 | 2.01 | 5 | 40.73 | 2 | 2 | 2. Answer to focus question: Since it is amphoteric, it will act as an acid if reacts with base and act as a base when reacts with acid.
John Simmers and Keena Dickey Reducing Benzil Using Sodium Borohydride Purpose: The Purpose of this lab this lab is to reduce benzil using sodium borohydride, and then identify the product that was produced by testing the products melting point, mixture melting point, thin layer chromatography and infrared spectroscopy. Theory: Reductions in organic chemistry results from the addition of hydrogen or lose of oxygen from an organic molecule. When NaBH4 is at room temperature it is only able to reduce aldehydes and ketones to form the corresponding alcohol. NaBH4 is a much easier reducing agent than LiAlH4 because it reacts very slowly with protic solvents at room temperature. However NaBH4 has its down falls and decomposes in the presence of acidic functional groups like carboxylic acids, which means that acid groups must be reduced with a base such as sodium hydroxide before NaBH4 will be able to reduce an aldehyde or ketone.
An aqueous solution of ammonium sulfate is allowed to react with an aqueous solution of lead(II) nitrate. Identify the solid in the balanced equation. A) (NH4 )2 SO4 B) Pb(NO3 )2 C) PbSO4 D) NH4 NO3 E) There is no solid formed when the two solutions are mixed. ____ 11. An aqueous solution of sodium carbonate is reacted with an aqueous solution of calcium chloride.
Glycerol is produced as a side-product. Acidification produces myristic acid, a fatty acid. Reactions with Fe3+ and Ca2+ cations produce insoluble acid salts (iron soaps and calcium soaps). Cautions! • Ethyl ether has a very low boiling point (40oC).