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Two liquids, A and B, form an ideal solution. Liquid A has a molar mass of 95.1 g mol-1 and liquid B a molar mass of 64.3 g mol-1. At 25 oC, the vapour pressure of A is 92.8 torr and that of B is 77.2 torr. For a mixture containing 50 g of each liquid, calculate
(i) the mol fractions of A and B in the liquid,
(ii) the partial pressures of A and B,
(iii) the total pressure,
(iv) the mol fractions of A and B in the gas phase.
(v) Comment on the differences between your answers to (i) and (iv).
Compute pH of a solution that is 0.210 M in nitrous acid (HNO2) and 0.290M in Potassium nitrate(KNO2). Define the acid dissociation constant of nitrous acid is 4.5x10-4
A powder contains benzoic acid mixed with starch. A student finds that a 2.96 g sample of the powder needs 39.91mL of a 0.096M sodium hydroxide solution for the acid to be neutralized. Explain what is the percent by mass of benzoic acid in the pow..
How many electrons should we expect to see associated with the lowest energy peak in the photoelectron spectrum of the element Arsenic (As)
Calculate what the pH is at 0 mL added strong acid, the quarter-, half-, and three-quarter-equivalence points, the equivalence point, and when excess acid has been added.
How does the addition of salt affect the equilibrium temperature of the icewater mixture? Did either cup completely freeze after 30 minutes? How does the addition of salt appear to affect the freezing point of water?
How many unhybridized p atomic orbitals are present when a central atom exhibits tetrahedral geometry. Trigonal planar geometry. Linear geometry
If 15 grams of copper (II) chloride react with 20 grams of soduim nitrate, how much sodium chloride can be formed?
Assume 40 g of solid (NH4)2Fe(SO4)2 * 6H20 was used in 1 l of solution to create the solution tested. What is the theoretical % Fe in a pure sample. Assume that the molecular wt = 392.15 g/mole.
During the combustion of 5.0 g of octane, C8H18, 239.5 kcal is released. How many grams and how many moles of octane must be burned to release 450 kcal?
Predict the splitting pattern for each kind of hydrogen in the following molecule. Make splitting assignments starting with the methyl group on the left and end with the methyl group on the right.
an object made of aluminum has a mass of 8.37 gram. when it was placed in a graduate cylinder containing 20.0 milliter of water, the water level rose to 23.1 milliter. calculate the density and specific gravity of the object.
Calculate the pH of a 0.60 M H2SO3, solution that has the stepwise dissociation constants Ka1=1.5x10^-2 and Ka2= 6.3x10^-8
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