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a) When HCl is added to 1,3-butadiene either 3-chloro-1-butene or 1-chloro-2-butene forms. Which product is more stable? Explain.
b) Explain why at low temperatures, e.g. -80oC, when HCl is added to 1,3-butadiene the major product is 3-chloro-1-butene.
c) Explain why at +80oC when HCl is added to 1,3-butadiene the major product is 1-chloro-2-butene.
d) 3-chloro-1-butene is converted to 1-chloro-2-butene at +80oC, i.e. give the mechanism for the conversion. (Note: AlCl3 can be used to catalyze the conversion.)
N2 + 3H2 --> 2NH3 what volume of hydrogen is necessary to react with five liters of nitrogen to produce ammonia?
Given that the enthalpy of formation is -277.7 kJ/mol for C2H5OH(l) and -393.5 kJ/mol for CO2(g), find the enthalpy of formation for C6H12O6.
We add excess Na2CrO4 solution to 17.0 mL of a solution of silver nitrate (AgNO3) to form insoluble solid Ag2CrO4. When it has been dried and weighed, the mass of Ag2CrO4 is found to be 0.310 grams.
A buffer solution of pH of 9.25 contains P mol of a weak base and Q mol of a salt of its conjugate acid. When 120 cm3 of a 0.0140 mol.dm-3 solution of hydrochloric acid was added to this buffer solution
an 8 g sample of a copper ore was dissolved in an acid solution and then reacted with NO3- from a KNO3 salt solution. it required 71.5 ml of a .155 M KNO3 solution to fully react the copper in the ore sample.
A sample of an element has a volume of 81 mL and a density of 1.73 g/mL. What is the mass in grams of the sample (round to the nearest tenth)?
What volume in L is occupied by 19.62 g of methane, CH4 (MM = 16.04 g/mol) at 23 °C and 1.34 atm?
what is the temperature of the air inside of the tire when the pressure increases to 29 psi? Assume tire volume is constant.
Suppose that 23.2 mL of 0.410 M sodium chloride is mixed to 23.2 mL of 0.339 M silver nitrate. Determine how many moles of silver chloride would precipitate?
Which solution will have the lowest boiling point?
Laboratory-grade diethyl ether contains small amounts of ethanol (1-2%). Is this grade of solvent suitable for the preparation
Assuming the structures above gave molecular ion abundances of 12, 70, and 23(dexchlorpheniramine, 9-aminoacridine and pilocarpine, respectively), what abundances would you expect for the M+1 and the M+2 peaks for each structure?
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