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Although acetic acid - water may be utilized as a "solvent pair", why are dilute solutions of an inorganic acid/water (or, inorganic base/water) avoided in recrystallization attempts?
What would be the freezing point for a 0.35m solution of sodium bromide in water? (Hoff factor = 1.75)
Important information about Identifying unknown substances, Compound A (C7H14O) burned with a yellow, nonsooty flame and did not decolorize a bromine-methylene chloride solution. It did give a positive 2,4-dinitrophenylhydrazine test
At the boiling point of benzene Delta Hvap=30.78 kJ/mol and Delta Svap=87.15 j/(mol * K). Determine the normal boiling temperature in degrees Kelvin for C6H6.
An aqueous solution of an acid HX has a pH of 5.34,what is the value of Ka for HX and calculate the percentage dissociation of HX in the solution
Calculate tthe freezing point in centigrade units of a soluiton consisting of 685 grams of ethylene glycol dissolved
At 850K the value of the equilibrium constant K(pressure) is 0.2970. If a sealed vessel contains an initial reaction mixture of [N2] = 0.0150M, [H2]= 0.0200M and N2H2= 0.000100M what will [N2H2] be when equilibrium in reached.
the ksp of the phosphate fertilizer cahpo4. 2h2o is 2.7 x 10-7nbspat 25oc.what is the molar concentration of a
when 0.514 g of biphenyl c12h10 undergoes combustion in a bomb calorimeter the temperature rises from 25.8 degc to 29.4
Under standard state conditions, what spontaneous reaction will occur in aqueous solution among the ions Ce4+, Ce3+, Ge3+ and Fe2+. Include the state of each species. Iron: and cerium: Also Calculate the Delta G standard and Kc for the reactions
Why is lip gloss long lasting containing petroleum? How many metric tonnes of 5%-S coal would be required to yield the H2SO4 needed to produce a 2.0-cm rainfall of pH 2.00 over an area of 100 square kilometers?
What is the energy diagram for cyclohexanol to cyclohexane complete with starting alcohol, carbocation, and oxonium ion
Predict the freezing point of a solution prepared by dissolving 8.9 g MgCl2 in 98 g H2O. Kf for water is 1.86 °C m-1. A) 3.5 °C B) -3.5 °C C) 5.3 °C D) -5.3 °C E) -0.51 °C
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