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Aniline,C6H5NH2 , is a weak base that dissociates in water. At 25 degrees Celsius, the base dissociation constant, Kb, for aniline is4.3 * 10-10.
(A) Determine the hydroxide ion concentration and the percentage dissociation of a .150 molar solution of aniline at 25 degrees Celsius.
(B) Determine the pH of a solution prepared by adding .0500 moles of solid C6H5NH3Cl to 100 milliliters of a .150-molar solution of C6H5NH2.
(C) If .0800 mole of solid magnesium chloride, MgCl2, is dissolved in the solution prepared in part (B) and the resulting solution is well-stirred, will a participate of Mg(OH)2 form? Show calculation to support your answer. (Assume the volume of the solution is unchanged. The solubility product constant for Mg(OH)2 is 1.5*10-11).
A reaction was conducted in benzene as the solvent. Because the reaction was very exothermic, the mixture was cooled in a salt-ice bath. This was a bad choice. Why?
The resulting solution is titrated to a starch endpoint with 34.81 mL of the thiosulfate solution. Calculate the concentration of the thiosulfate solution.
a sample of oxygen that occupies 1.00X 10^6 ml at 575 mm hg is subjected to a pressure of 1.25 atm. what will the final volume of the sample be if the temperature is held constant?
The molar heat capacity of silver is 25.35 j/mol C. How much energy would it take to raise the temperature of 10.0g of silver by 14.8 C. what is the specific heat of silver
the calculated H neutzn be higher, lower, or the same as the literature H neutzn? briefly explain this difference as a result of using only one graduated cylinder for the experiment
what statement best describes the graph representing the integrated 1st order rate law
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53.5 g of an ideal gas of molecular weight = 10.5 g/mol is confined at a pressure of 50 kPa. The density of the gas is 0.164 g/L. Compute the temperature of the gas in degrees Celsius.
Which one of the following alkyl halides gives the lowest ratio of substitution to elimination on treatment with sodium ethoxide in ethanol.
Within the Bohr model of the hydrogen atom, the radius of the orbit for the ground state was 5.292 x 10-11 m. Using de Broglie's idea that the circumference of this orbit had to equal the wavelength of the electron
an automobile gasoline tank holds 49 of gasoline. when the gasoline burns 172 of oxygen are consumed and carbon dioxide
sketch the curves for the distribution of energy states and their electron popultaions for a metallic conductor, an insulator
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