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1-butanol and chlorobenzene form a minimum boiling point azeotropic system. The mole fraction of 1-butanol in the liquid (x) and vapour (y) phases at 1.000 atm is given below for a variety of boiling temperatures
T/K 396.57 393.94 391.60 390.15 389.03 388.66 388.57
X 0.1065 0.17 0.2646 0.3687 0.5017 0.6091 0.7171
Y 0.2859 0.3691 0.4505 0.5138 0.5840 0.6409 0.7070
Pure chlorobenzene boils at 404.86 K. (a) Construct the chlorobenzene-rich portion of the phase diagram from the data. (b) Estimate the temperature at which a solution whose mole fraction of 1-butanol is 0.300 begins to boil. (c) State the compositions and relative proportions of the two phases present after a solution initially 0.300 1-butanol is heated to 393.94 K
The nature of the intermediates in E1 and Sn1 reactions are carbocations. If the molecule doesn't follow that formula then it has either double bonds or rings or both.
In the following reactions identify the elements oxidized and elements reduced: • 3Ag + 4HNO3 .............> 3AgNO3 + NO +2H2O • 6Fe2+ + Cr2O72- + 14H+ .......>
Calculate the molarity of a solution of acetic acid made by dissolving 19.00 of glacial acetic acid at 25 in enough water to make 230.0 of solution.
Determine the molarity of Ni in the 20.0 mL solution. Determine the mass in grams of Ni in the original sample. Determine the weight percent of Ni in the sample.
A buffer that contains 0.347 M of a base, B and 0.483 M of its conjugate acid BH+, has a pH of 8.08. What is the pH after 0.00713 mol of HCl are added to 0.442 L of the solution
Ethers can be prepared by SN2 attack of an alkoxide ion on a alkyl halide. Suppose you wanted to prepare cyclohexyl methyl ether, shown below, using the SN2 reaction
Concentration : Dilution Problem, A student placed 18.5g of glucose (C6H12O6) in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100.-mL mark on the neck of the flask was ..
Suppose 50 mL of 0.020 M Hydhrochloric acid solution was mixed to 50 mL of 0.20 M acetic acid solution (Ka of acetic acid, CH3COOH, = 1.8 x 10-5). Determine the approximate pH of the mixture.
Express the concentration of a 0.0760 M aqueous solution of fluroide, F-, in mass percentage and in parts per billion
Apamine is a small monomeric peptide toxin present in the venom of the honeybee. it has the sequence: CNCKAPETALCARRCQQH a)it is known that apamine does NOT react with iodoacetate. how many disulfide bonds are present?
salt dissolves in 9.10g of water to give a saturated solution at 25C. What is the solubility (in g salt/100g of H2O)of the salt show work
suppose the thermometer is miscalibrated to read .3 degrees c higher than actual. what effect does this error in
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