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1. Aniline is a weak organic base with the formula C6H5NH2. The anilinium ion has the...

1. Aniline is a weak organic base with the formula C6H5NH2. The anilinium ion has the formula C6H5NH3+ and its Ka = 2.3 x 10¯5.

a) write the chemical reaction showing the hydrolysis of anilinium ion.
b) calculate the pH of a 0.0400 M solution of anilinium ion.

2.The Ksp of Sn3(BO3)4 is 6.128 x 10¯12. Determine the molar solubility.

3. The Ksp for CuCrO4 is 3.6 x 10-6. What is the molarity of a saturated solution of CuCrO4?

4. The solubility of MgCl2 at 25°C is approximately 8.0 g MgCl2/100 g water. Assuming the solution has a density of 1.00 g/cm3, calculate the concentration of MgCl2 in a saturated solution in moles/liter and then calculate Ksp for MgCl2.

5. Silver nitrate (AgNO3) is added to a solution of 0.020 M sodium carbonate. At what concentration of AgNO3 does a precipitate start to form?

6. A solution is prepared by mixing 50.0 ml of 0.0100 M lead(II) nitrate with 50.0 ml of 0.0200 M sodium bromide. Will a precipitate form?

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Answer #1

1.Anilinium ion reacts with water and donate its proton to water molecule and act as an acid.Now from ICE table we can calculate the PH of the weak acid.

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