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Benzoic acid and 2-naphthol have the same melting point (121 - 122 °C). An unknown compound has a melting point of 121 - 122 °C. Melting point of a mixture of pure benzoic acid and your unknown sample was 116-122 °C. Melting point of a mixture of 2-naphthol and your unknown sample was 110 - 116 °C. What is your unknown?
At what point in a Grignard Reaction is it no longer water sensitive? explain why the reaction can be exposed to water after this point
In the Hofmann Degradation of amines an amine is exhaustively methylated with Methyl Iodide and the resultant compound treated with Silver Hydroxide and heated. An alkene is formed which is not the Saytzeff product.
A solution of PbI2 has [Pb2+] = 4.5 x 10-5 and [I-] = 6.5 x 10-4. PbI2 has Ksp = 8.7 x 10-9. Write down the reaction that is taking place. Calculate Q. Is Q larger or smaller than the Ksp? Is the solution unsaturated, saturated, or supersaturated?..
Consider an ideal gas with an absolute temperature of T1. To what temperature would you need to heat the gas to double its pressure?
What is the limiting reactant when equal masses of iron(III) chloride and potassium phosphate react in solution?
A sample of iron was dissolved iin hydrochloric acid. The liberated hydrogen was collected by displacement of water. The hydrogen occupied 262 mL at 26 c.
Calculate the mole fraction of toluene in the solution that contains 48.0 g toluene and 139 g benzene.
a 26.0 ml sample of a liquid was found to have a mass of 13.0g. what is the density of the liquid?
Calculate the concentration (M) of sodium ions in a solution made by diluting 50.0 mL of a 0.874 M solution of sodium sulfide to a total volume of 250.0 mL
Trifluoroiodomethane, CF3-I, undergoes free radical addition to alkenes. Explain the fact that the free-radical addition of this compound to 2-methyl-2-butene is faster than its addition to 1-pentene.
A student weighed a piece of aluminum foil, rubber band, and a 250 ml flask and found it to be 107.520 grams. After a sample of unknown liquid is vaporized and condensed, the flask, aluminum foil and rubber band weighed 108.148 grams.
Carbonyl fluoride, COF2 , is an important intermediate used in the production of fluorine-containing compounds. For instance, it is used to make the refrigerant carbon tetrafluoride, CF4 via the reaction If only is present initially at a concentra..
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