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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).
250 ML of a saturated aqueous solution of CaF2 at 25 degrees celsius is found to contain 0.0040 g of dissolved CaF2. Find Ksp of CaF2 in water at 25 degrees celsius.
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Give the balanced total and net ionic equations and predict whether a reaction occurs. indicate whether the reactions are precipitation reactions or acid-base reactions.
A piece of solid Ni metal is put into an aqueous solution of HNO3. Write the net ionic equation for any single-replacement redox reaction. Include states and charges
a 5.00 mL sample of isopropyl alcohol has a mass of 3.930 g when measured at 20 degrees Celsius? what is the specific gravity of isopropyle alcohol?
Write down the reactions that occurred in each test tube if no reaction occurred then put NR on the product side Test tube.
A box contains 12600 red marbles and 885000 yellow marbles. What sample size is required to reduce the sampling standard deviation of red marbles to 1.85%?
Determine the enthalpy for this reaction: \rm 2NaOH (s)+ CO_2 (g) \rightarrow Na_2CO_3 (s) + 2H_2O (l) Express your answer in kilojoules per mole to four significant figures.
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