Name Naza Moore ID# 24120389 Lab# 2 Lab instructors Alecia Palmer and Donald Burke Course Instructor Maureen Wilson Lab Title Preparation of cyclohexene from cyclohexanol Aim Preparation of an Alkene by dehydration of an alcohol in the presence of a catalyst. Calculate the percentage recovery of products. Test for purity and identification of products. Abstract Cyclohexene and cyclohexanol are both colourless aromatic compounds. The major difference between the two is the presence
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composition of materials (metals‚ polymers‚ ceramics and composites). Processing‚ properties and behavior in service environments. No. of Units for Lecture and Laboratory: 3 units lecture No. of Contact Hours per week 3 hours lecture Prerequisites General Chemistry‚ Physics 2 Course Objectives At the end of the course the student must be able to: 1. Identify the importance of materials to mankind through specific examples of materials which have had significant impact to civilization 2. Identify the different
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SUBLIMATION Sublimation is a technique used by chemists to purify compounds. Typically a solid is placed in a vessel which is then heated under vacuum. Under this reduced pressure the solid volatilizes and condenses as a purified compound on a cooled surface‚ leaving the non-volatile impurities behind. This cooled surface often takes the form of a "cold finger" (shown in the diagram above). Once heating ceases and the vacuum is released‚ the sublimed compound can be collected from the cooled surface
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CLASSIFICATION TESTS A. Acids There are relatively few suitable tests for carboxylic acids. Classification is based mostly upon solubility tests. If the compound is water soluble‚ test the aqueous solution of your compound with pH paper (also check the pH of the original water). If the compound is water-insoluble and it dissolves in 5% (1.5M) sodium hydroxide and 5% NaHCO3 solutions as performed in your solubility tests‚ it can be classified as a carboxylic acid. Establish an equivalence value
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Organic Lab Part 2 Experiment 7: Diethyl n- Butylmalonate Lab Partner: Reference: Williamson K.L.‚ & Masters‚ K.M. (2011).”Diethyl n- Butylmalonate”. Macroscale and Microscale Organic Experiments ( 6th edition pp. 531-534)
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Chapter 17—Alcohols and Phenols SHORT ANSWER Drawing Instructions: Draw structures corresponding to each of the given names. 1. Draw: cis-4-tert-butylcyclohexanol ANS: 2. Draw: 3-methyl-2-buten-1-ol ANS: 3. Draw: 2-phenyl-2-propanol ANS: 4. Draw: glycerol ANS: 5. Draw: 2‚ 4‚ 6-trinitrophenol ANS: IUPAC Naming Instructions: Provide proper IUPAC names. 6. Name: ANS: (E)-2-ethylbut-2-en-1-ol 7. Name: HOCH2CH2OH ANS:
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(in the second centrifuge tube). Now wash (microscale) the combined extracts with saturated NaCl solution (5mL)‚ then with 10% aqueous potassium carbonate (5mL)‚ then with saturated NaCl solution (5 mL) again. Dry the organic layer with anhydrous sodium sulfate. Decant the organic layer into a small beaker and concentrate to roughly 0.2 mL by evaporation in the hood (do not apply heat!). If the sample goes to dryness‚ re-dissolve in hexane (0.2 mL). *Set aside a small amount of your crude
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Chapter 1 MULTIPLE CHOICE QUESTIONS Topic: Atomic Orbitals 1. A) B) C) D) E) In quantum mechanics a node (nodal surface or plane) is: a place where Ψ is negative. a place where Ψ is positive. a place where Ψ = 0. a place where Ψ2 is large. a place where Ψ2 is negative. Ans: C Topic: Atomic Orbitals‚ Molecular Orbitals 2. When the 1s orbitals of two hydrogen atoms combine to form a hydrogen molecule‚ how many molecular orbitals are formed? A) 1 B) 2 C) 3 D) 4 E) 5 Ans:
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Trends in the Periodic table March 24‚ 2013 Four trends that will be covered: Atomic size Ionization Energy Electronegativity Electron Affinity Each of these has a group trend and a period trend A group trend refers to what is happening with the atom as you travel up or down a column of the periodic table. A period trend refers to what is happening with the atom as you move left or right across a row of the periodic table Atomic Size When discussing an atom’s size‚ usually the
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LAB 1 POSTLAB REPORT (65 pts) 1. State the objective(s) of the lab. (5 pts) • To analyze the effects of specific liquids on a variety of materials • To observe potential hazards • To investigate the effects of strong bases‚ strong acids‚ acetone and bleach on a variety of materials which include sugar‚ cotton‚ nylon‚ hair‚ polystyrene‚ egg white‚ egg yolk‚ and aluminum foil. 2. Give a summary of your observations for each of the experiments. (24 pts) Sugar + H2SO4 Black clumped substance
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