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Carboxylic acids and phenols can be separated by chemically active extraction if the pH of the aqueous layer is properly chosen. Phenols are sufficiently acidic to be extracted into aqueous sodium hydroxide, but not into aqueous sodium bicarbonate, while the more acidic carboxylic acid can be extracted into aqueous sodium bicarbonate. Amines can be extracted from organic solvents by dilute aqueous acid because of the formation of polar ammonium salts. Construct a detailed flow diagram showing how you would separate a mixture of benzoic acid, p-bromophenol, aniline, and naphthalene.
When 24 copper pennies are submerged in water, the pennies displace 8.26 cm3 of water. If the combined mass of the pennies is 73.86 g, what is the density of copper?
use an orbital interaction diagram to draw the molecular orbitals oh H2+. Do you predict that this molecule will be stable? Explain your logic.
A horse ate some ration that was equivalent to 4000. kJ. In this case assume that none of thatenergy was stored or used in the animal's body but that all of this energy was lost in the form ofperspiration
For a hypothetical gas-phase reaction that is second order in A and third order in B, by what factor does the rate change if pA is decreased by 4 times and pB is doubled
redox reaction NO2- is oxidized to NO3 and Ag is reduced to Ag. Complete and balance the equation for this reaction in basic solution
In alkene mechanisms, is the formation of an enantiomeric pair of sterioisomers possible for the final product. and Why
If 28.0 mL of .150 M HCL is needed to neutralize all the NH3 from a 2.25-g sample of organic material, calculate the mass percentage of nitrogen in the sample.
For each of the following equilibria, use Le Chatelier's principle to predict the direction of reaction when the volume is increased.
What is the molar mass of mixture A and mixture B? Show detailed work for first and best rating.
If a 1,2-diol is subjected to a periodic acid test, a white solid will form when silver nitrate is added. What is the identity of the white solid?
The vapor pressure of methanol at 30. oC is 158 torr. What mass (in grams) of methanol actually evaporates?
Compounds in a and b were named incorrectly. On a sheet of paper draw the molecule that fits the given description. From the structure you drew determine the correct IUPAC name. Write the correct IUPAC name in the blank.
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