The relative reactivity of the hydrogens H1, H2, H3 , and H4 were 0.37, 1.4, 2.9, and 1.0 respectively. The radical chlorination of 1-chlorobutane follows the radical reaction mechanism. Abstraction of hydrogen from 1-chlorobutane by the chlorine radical occurs in the first part of the propagation step. Depending on which hydrogen is abstracted by the chlorine radical, determines which product is formed. Hydrogens on the alkene have different reactivity which determines which isomer is favored.
A. boron B. carbon (diamond) C. silicon D. sulphur 6. Which of the following chlorides is most likely to be soluble in tetrachloromethane, CCl4? A. barium chloride B. caesium chloride C. calcium chloride D. phosphorus chloride 7. In which of the following liquids does hydrogen bonding occur? A. ethanoic acid B. ethyl ethanoate C. hexane D. hex-1-ene 8.
2 marks 4 Draw the structural formula of Compound G. 1 mark 5 Using the chemical shift correlation for 13C NMR, predict the number of peaks for Compound G and draw in the position of the peaks on the blank spectrum below, annotating each peak with its corresponding structure. (2 marks) 6 Draw the structural formula for 2-chloro but-2-ene. Below this draw a structural formula of an isomer of 2-chloro but-2-ene and name this substance.
palladium on carbon 13 of 22 4/16/12 9:15 PM StudyBlue Flashcard Printing of Lab Final 2211L UGA http://www.studyblue.com/servlet/printFlashcardDeck?deckId=... Which alkyl halide would react fastest in a nucleophilic substitution using silver nitrate in ethanol? 3-bromo3-methylpentane bc its sn1 Which alkyl halide would react fastest in a nucleophilic substitution using sodium iodide in acetone? 1-bromopentane bc its sn2 What is the name of the chemical reagent used as the source of Br2 in the preparation of diphenylacetylene? pyridinium hydrobromide perbromide type of stationary phase column length column temperature rate flow of the carrier gas List the 4 general factors that affect the separation obtained on a gas chromatograph What specific technique is used to collect/isolate your purified unknown compound at the end of the recrystallization experiment?
Introduction: The radical chlorination of chlorobutane results in the formation of four possible products. These products are formed by substitution reactions, where a halogen atom (chlorine) replaces a hydrogen atom (Wade 2010). The amount of each product formed is based on the relative reactivity of the product. The calculations of the relative reactivity are dependent on the reactivity of the hydrogen atoms, which is influenced by the chloro substituent as well as other factors such as the level of the substituted carbon and the bond dissociation energy. For this lab we want to observe how the chloro substituent has an effect on the reactivity of the possible hydrogen atoms.
Standard Molar Volume The ultimate goal of this lab was to find the standard molar volume of hydrogen gas (H2). An unknown sample of metal to 3M H2SO4 and an eudiometer filled with water. The dense acid sank towards the bottom to react with the metal sample and form Hydrogen gas. The gas raising to the top of the container caused the pressure in the eudiometer to increase, which lead the water to be displaced. | Trail 1 | Trial 2 | Code | Skinny | Skinny | Mass of Metal | .041g | .027g | Temperature of Water | 296k | 296k | Vapor of Water Temperature | 21.1 mmHg | 21.2mmHg | Barometric Pressure | 76.632cm | 76.632cm | Volume of H2 collected | 29.15mL | 29.2mL | Height of Supported H2 column | 23.95cm | 23.15cm | After the O2 gas had fully reacted, measurements of mass, temperature, vapor, and H2 collected (as shown in the table above) .
Reactions Lab David Vaghari INSTRUCTOR: Dr. Chernovitz Monday, July 23, 2012 Oxygen Production Introduction In this lab, potassium chlorate will be decomposed producing oxygen gas and potassium chloride. The hypothesis is that the reaction will yield 3.916 grams of oxygen gas. Materials Test tube 10 grams potassium chlorate Bunsen burner Procedure Step 1. Obtain a test tube, place a 10 gm of potassium chlorate. Step 2.
b. Calculate the fuel value in kJ/g for each of these compounds. c. FOr each hydrocarbon determine the percentage of hydrogen by mass. d. By comparing your answers for part (b) and (c), propose a relationship between hydrogen content and fuel value in hydrocarbons. a) for a we first need to find a balanced equation for when the hydrocarbons combust to form CO2 and H20.
RCH2G Primary R2CHG Secondary R3CG Tertiary. 4.7 Preparation of Alkyl Halides from Alcohols and Hydrogen Halides R-OH + H-X -> R-x +HOH “Alcohol” + “Hydrogen halide” -> “Alkyl halide” + “Water” The more primary the alcohol the more reactive, Primary=any halide Secondary=usually just Br with heat 4.8 Mechanism of the Reaction of Alcohols with Hydrogen Halides: Hammond’s Postulate Reaction of alcohol with hydrogen halide is a substitution Hydrogen Halide protenates Alcohol which then goes to H2O and the positive “alcohol” (no longer an alcohol since missing OH group) joins with the Halide Electrophile: electron loving Nucleophile: Nucleus seekers (extra electron pair) 4.9 Potential Energy Diagrams for Multistep Reactions: The SN1 Mechanism SN1 Mechanism: slow step is unimolecular 4.10 Structure, Bonding, and Stability of Carbocations Primary Carbocations do not exist in intermediates since too unstable (H3C)-C(H2) and (H3)-C are even more unstable. Secondary (H3C)2-C(H) are possible particularly with secondary alcohols with hydrogen
Chapter Assessment Answer Key Chemistry: Matter and Change T167 4 CHAPTER ASSESSMENT Date alpha radiation Dalton’s atomic theory radiation radioactivity Chapter Assessment particles involved in a reaction. Chemistry: Matter and Change • Chapter 4 nucleus. A nuclear equation shows the atomic number and mass number of the 19 Both concern changes in atoms. A nuclear reaction involves a change in an atom’s 15. nuclear reaction, nuclear equation atom. in the nucleus of a given atom.