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A solution is ready by adding some solid PbCl2 to water as well as allowing the solid to come to equilibrium with the solution. Explain the equilibrium constant for the reaction below is Kc = 1.7x10^-5.
PbCl2 (s) -> Pb2+ (aq) +2 Cl- (aq)
Explain what is the equilibrium concentration of Pb2+ in the solution? Presume some of the solid is still present.
What is the solubility of the following compounds in water and ethanol. ethyl acetate, ethanol, silica, azobenzene, azulene, 4(p-nitrophenylazo) resorcinol, methyl red, bromcresol Green
The standard molar entropy for Br2(g) is 245.46 J/(molK) at 25?C. Given that ?S? = 104.58 J/K for the dissociation of one mole of Br2(g) into Br(g) at 25?C, find the standard molar entropy for Br(g) at 25?C.
Predict the outcome of reactions that occur when a solution having [Cu2+]/[Fe2+] = 10 comes in contact with hydrotroilite (FeS). What will be the ratio of [Cu2+]/[Fe2+] in the solution after equilibrium is established?
hydrochloric acid reacts with strontium hydroxide to yield strontium chloride and water. if 2.00 mol of hydrochloric
A 15.0 grams lead ball at 25.0 celcius ws heated with 40.5 Joules of heat. Given the specifc heat of lead is 0.128 J/ grams. celsius, what is the final temperature of the lead?
the barometric pressure in a cavern was measured using a mercury barometer. a value of 28.2 inches of hg was obtained.
From equation E=kQ1Q2/d and the ionic radii given in the figure , calculate the potential energy of the following pairs of ions. Assume that the ions are separated by a distance equal to the sum of their ionic radii.
An aluminum engine block has a volume of 4.77 L and a mass of 12.88 kg .What is the density of the aluminum in grams per cubic centimeter?
The following reaction is first order with respect to NO and first order with respect to O2, and the rate constant is 5.0 x 104 M-1s-1: 2NO(g) + O2(g) --> N2O4(g) a) Write the rate law for this reaction
A solution of 0.01M acetic acid is found to have a PH of 3.63 . Calculate the Ka for the acid
a 265- flask contains pure helium at a pressure of 761 . a second flask with a volume of 490 contains pure argon at a
What volume in L is occupied by 19.62 g of methane, CH4 (MM = 16.04 g/mol) at 23 °C and 1.34 atm?
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