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A compound A (C22H27NO) is insoluble in acid and base but reacts with concentrated aqueous HCl and heat to give a clear aqueous solution from which, on cooling, benzoic acid precipitates. When the supernatant solution is made basic, a liquid B separates. Compound B is achiral. Treatment of B with benzoyl chloride in pyridine gives back A. Evolution of gas is not observed when B is treated with an aqueous solution of NaNO2 and HCl. Treatment of B with excess CH3I, then aqueous Ag2O and heat, gives a compound C, C9H19N, plus styrene, C6H5-CH=CH2. Compound C, when treated with excess CH3I, then aqueous Ag2O and heat, gives a single alkene D that is identical to the compound obtained when cyclohexanone is treated with the ylid -:CH2- PPh3. Give the structure of A.
Given that the Ka of boric acid is 5.8x10^-10M, what is the pH of a 0.50M boric acid solution? Are there any good approximation available?
The Henry's Law constant of methyl bromide, CH3Br, is k = 0.159 mol/(L • atm) at 25°C. What is the solubility of methyl bromide in water at 25°C and at a partial pressure of 250. mm Hg?
what is the concentration of a nitric acid solution if a 10.00ml sample of the acid reqires 31.25ml of 0.135m koh for neutralization.
a tank contains helium at 490 mmHg, nitrogen gas at 0.750 atm, and neon at 520 torr. what is the total pressure in atm?
Calculate the initial rate of a first-order reaction if the concentration of reactant is 0.63 M and the half-life is 6.9 s
For the following reactions, identify the substance that is the oxidizing agent and the substance that is the reducing agent.
Write a mechanism for the reaction. Include arrows to show electron flow. Number and write out each step individually.
what kind of product distribution and what does that tell you about the operating mechanism and the factors that affect product distribution?
2Na + 2H2O → + H2 How many moles of hydrogen gas are produced when 0.066 mole of sodium is completely reacted?
To what volume should you dilute 124 mL of an 7.95 M CuCl2 solution so that 49.5 mL of the diluted solution contains 5.8 g CuCl2
What type of reaction occurs prior to the substitution reaction to form a new good leaving group? And please explain why? a. nothing b. an acid base reaction
how many grams of C6H12O6 must be added to 250g of water to lower the vapor pressure by 1.30mm Hg at 40C degrees? the vapor pressure of water at 40C degrees is 55.3mm Hg.
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