Write out the two propagation steps for the addition of HCI to propene and calculate AH° for each step. Which step prohibits chain propagation from repeatedly occurring?
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- Suppose you are performing a hydroboration oxidation of 1-hexene to form 1-hexanol. Your reaction includes 0.92 mL of 1-hexene, which has a density of 0.673 g/mL, 1.69 mL of 1.00 M borane in THF, and 1.27 mL of 30.0% m/v hydrogen peroxide. What is the theoretical yield of 1-hexanol (in g) for the reaction?Which of the following BEST describes the isoelectric point of a non-ionizing molecule such an ethanol (CH3CH2OH) in the physiological pH range? a.) pH = 0 b.) pH= 1.5 c.) all pH values d.) pH = 7.421.) Calculate the enthalpy of hydrogenation of benzene to cyclohexane from the following reactions A,H (kJ/mol) C6H6 (1) + 15/2 02 (g) → 6 CO2 (g) + 3 H20 (1) C6H12 (1) + 9 02 (g) → 6 CO2 (g) + 6 H20 (1) H2 (g) + ½ 02 (g) → H2O (1) -3268 -3920 -285.83 a.) -205 kJ/mol b.) -1507 kJ/mol c.) -938 kJ/mol d.) -366 kJ/mol
- Write the hydrohalogenation reaction of butene where the halogen is bromine.3. Like polymers, dendrimers are macromolecules (large molecules). Some dendrimers have been used in applications like drug delivery and waste water reclamation. What is the result of the following reaction producing a "first generation" dendrimer? NH2 H2N. (-HCI) ???? 4 NH2When aniline, C6H5NH2(Kb=7.41010) , reacts with a strong acid, its conjugate acid, C6H5NH3+, is formed. Calculate the pH of a 0.100 M solution of C6H5NH3+ and compare it with the pH of acetic acid (Ka=1.86105) .
- Dissolving formaldehyde in water causes the solution to contain gem-diol CH2 (OH)2. Write down the steps for the formation of formaldehyde.85. Propane, C3H8, is a hydrocarbon that is commonly used as a fuel. (a) Write a balanced equation for the complete combustion of propane gas. (b) Calculate the volume of air at 25 °C and 1.00 atmosphere that is needed to completely combust 25.0 grams of propane. Assume that air is 21.0 percent O2 by volume. (Hint: We will see how to do this calculation in a later chapter on gases—for now use the information that 1.00 L of air at 25 °C and 1.00 atm contains 0.275 g of O2 per liter.) (c) The heat of combustion of propane is −2,219.2 kJ/mol. Calculate the heat of formation, ΔH∘fΔHf° of propane given that ΔH∘fΔHf° of H2O(l) = −285.8 kJ/mol and ΔH∘fΔHf° of CO2(g) = −393.5 kJ/mol. (d) Assuming that all of the heat released in burning 25.0 grams of propane is transferred to 4.00 kilograms of water, calculate the increase in temperature of the water.How does the first step in the reaction of propene with Br2 differ from the first step in the reaction of propene with HBr?
- ) The reaction of hydroxide ion with chloromethane to yield methanol and chloride ion is an example of a general reaction type called a nucleophilic substitution reaction: HO¯ + CH;CI = CH;OH + CI¯ The value of AHº for the reaction is -75 kJ/mol, and the value of ASº is +54 J/ (K- mol). What is the value of AG° (in kJ/mol) at 298 K? Is the reaction exothermic or endothermic? Is it exergonic or endergonic?We have a hydrocarbon, C16H26. The compound has two triple bonds and the acids produced by ozonolysis are CH3(CH2)4CO2H and H2OCCH2CO2H. What is a likely structure for this hydrocarbon?2. An unknown hydrocarbon A with the formula C 6H 12 reacts with 1 molar equivalent of H 2 over palladium catalyst. Hydrocarbon A also reacts with OsO 4 to give diol B. When oxidized with KMnO 4 in acidic solution, A gives two fragments. One fragment is propanoic acid, CH3CH 2CO 2H and the other fragment is a ketone. Which of the following are correct