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Water and diethyl ether are immiscible liquids. Charged compounds dissolve in water and uncharged compounds dissolve in ether. Given that benzoic acid has a pKa of 4.8 and cyclohexylamine has a pKa of 10.7: a. What pH would you make the water layer in order to cause both compounds to dissolve in the water? b. What pH would you make the water layer in order to cause the acid to dissolve in the water layer and the amine to dissolve in the ether layer? c. What pH would you make the water layer in order to cause the acid to dissolve in the ether layer and the amine to dissolve in the water layer? d. How would you purify a mixture of benzoic acid, chlorobenzene, and cyclohexylamine?
When aminobenzene is subjected to standard nitration conditions {HONO2/(HO)2SO2} poor yields 1-amino-3 itrobenzene are obtained.
Titration of sodium carbonate with HCl to the methyl orange end point involves the reaction of 1 mole of Na2CO3 with 2 moles of HCl. Write the balanced chemical equation in a.
Calculate the heat required to raise the temperature of 125 g of water are heated from 20.0oC to 100oC based on a specific heat of water of 4.184 J/g oC.
Why are we being so careful to eliminate moisture from the reaction vessel, solvent, etc? What is the reaction that will occur if water is present?
The density of titanium metal is 4.51g/cm3 at 25 degrees celsius. What mass of titanium displaces 125.0mL of water at 25 degrees celsius.
Explain Molecular and Empirical Formulas, Ibuprofen, a headache remedy, contains 75.69% C, 8.80% H and 15.51% O by mass, and has a molar mass of 206g/mol.
one cup is equivalent to 237 cm^3. In 1 cup of oil has a mass of 216 g. What is the density of olive oil in g/cm^3
Consider a substance X with a Hvap = 20.3 kj/mol and Hfus = 9.0 kj/mol. The melting point, freezing point, and heat capacities of both the solid and the liquid X are identical to those of water
the frequency factor a is 8.7x 10 12 s- and the activation energy is 63 kj/mol, What is the rate constant for the reaction at 75C
Calculate the molar mass of X. 2.Identify the element symbol for X F2+2XBr -----> Br2+2XF
Please review the occurrence and cycling of calcium in nature, along with its use. Analyze and evaluate the article as to it's contemporary relevance regarding the elements availability, health implications and environmental impact.
Solutions with greatest long-wavelength UVA absorption: Name of strongest UVA absorbing ingredient
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