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?
Homework Answers
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.
Add Answer to:
1. Aniline is a weak organic base with the
formula C6H5NH2. The anilinium ion
has the...
The salt formed by the reaction of the weak base aniline, C6H5NH2, with the strong acid...
The salt formed by the reaction of the weak base aniline, C6H5NH2, with the strong acid nitric acid is anilinium nitrate, C6H5NH3NO3. What is the hydronium ion concentration of a 0.158 M solution of anilinium nitrate at 25∘C given that the value of Kb for aniline is 4.300×10−10? Report your answer in scientific notation. Your answer should have three significant figures.
5. Silver nitrate (AgNO3) is added to a solution of 0.020 M sodium carbonate. At what...
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?
A buffered solution containing dissolved aniline, C6H5NH2, and aniline hydrochloride, C6H5NH3Cl, has a pH of 5.65....
A buffered solution containing dissolved aniline, C6H5NH2, and
aniline hydrochloride, C6H5NH3Cl, has a pH of 5.65.
a) Determine the concentration of C6H5NH3 in the solution if the
concentration of C6H5NH2 is 0.230 M. The pKb of aniline is
9.13.
[C6H5NH3+] =
______M
b)Calculate the change in pH of the solution, ?pH, if 0.386 g
NaOH is added to the buffer for a final volume of 1.45 L. Assume
that any contribution of NaOH to the volume is negligible.
pH
=...
a. The hydronium ion concentration of an aqueous solution of 0.486 M aniline (a weak base...
a. The hydronium ion concentration of an aqueous solution of 0.486 M aniline (a weak base with the formula C6H5NH2) is ... [H3O+] = ___ M. b. The hydroxide ion concentration, [OH-], of an aqueous solution of 0.323 M isoquinoline (a weak base with the formula C9H7N) , Kb = 2.5×10-9, is: [OH-] = ___ M.
a)A solution of saturated PbBr2 is found to contain 2.4 ✕ 10−2M bromide ion. Calculate the...
a)A solution of saturated PbBr2 is found to contain 2.4 ✕ 10−2M bromide ion. Calculate the Ksp of PbBr2. b) A 40.0-mL solution contains 0.029 M barium chloride (BaCl2). What is the minimum concentration of sodium sulfate (Na2SO4) required in the solution to produce a barium sulfate (BaSO4) precipitate? The solubility product for barium sulfate is Ksp = 1.1 ✕ 10−10. c)The solubility product, Ksp, for magnesium hydroxide, Mg(OH)2, is 5.6 ✕ 10−12 at 25°C. What is the molar solubility...
At a certain temperature* (probably not 25 °C), the solubility of silver sulfate, Ag2SO4, is 0.012...
At a certain temperature* (probably not 25 °C), the solubility of silver sulfate, Ag2SO4, is 0.012 mol/L. Calculate its solubility product constant for this temperature. SIG. FIG. (required because number is small) Solubility product constants are very temperature sensitive. They are generally reported at 25°C. Not necessarily using this temperature allows me some flexibility. Answer: At a certain temperature, the solubility of potassium iodate, KIO3, is 36.1 g/L. Calculate its solubility product constant for this temperature. Answer: At a certain...
1) For the reaction: PbCl2(s) ↔ Pb2+(aq)+2Cl1-(aq), what is Q* when 2.5 mL of 0.070 M...
1) For the reaction: PbCl2(s) ↔ Pb2+(aq)+2Cl1-(aq), what is Q* when 2.5 mL of 0.070 M lead nitrate is added to 19 mL of 0.018 M sodium chloride? Ksp of lead chloride is 1.6 x 10-5 M3. Hint given in general feedback *Recall: Q is compared to Ksp to determine whether a precipitate forms. 2) Sodium phosphate is added to a solution that contains 0.0041 M aluminum nitrate and 0.028 M calcium chloride. The concentration of the first ion to...
Solubility product constant Ksp is also important to predict whether the precipitation will occur under the...
Solubility product constant Ksp is also important to predict whether the precipitation will occur under the known condition of ion concentration. This can be done by comparing the solubility quotient (Q) with the value of Ksp of the tested compound. 12. A solution of 0.00016 M lead (II) nitrate, or Pb(NO3)2, was poured into 450 mL of 000023 M sodium sulfate, Na2SO4. Would a precipitate of lead(II)sulfate, PbSO4, be expected to form if 250 mL of the lead nitrate solution...
The hydroxide ion has the formula OH-. The solubility-product constants for three generic hydroxides are given...
The hydroxide ion has the formula OH-. The solubility-product constants for three generic hydroxides are given here. XOH = 2.90 x 10-8 Ksp Y(OH)2 = 2.20 x 10-10 Ksp Z(OH)3 = 8.20 x 10-15 Ksp The removal of an ion is sometimes considered to be complete when its concentration drops to 1.00 x 10-6 M. What concentration of hydroxide would cause Y+2 to "completely" precipitate from a solution?
1) Use equilibrium ion concentration to calculate Ksp. The Pb2+ concentration in a saturated solution of...
1) Use equilibrium ion concentration to calculate Ksp. The Pb2+ concentration in a saturated solution of lead bromide is measured and found to be 1.19×10-2 M. Use this information to calculate a Ksp value for lead bromide. Ksp =___________ 2) Use solubility to calculate Ksp. The solubility of Fe(OH)2 is measured and found to be 1.15×10-3 g/L. Use this information to calculate a Ksp value for iron(II) hydroxide. Ksp =______________
A buffered solution containing dissolved aniline, C6H5NH2, and
aniline hydrochloride, C6H5NH3Cl, has a pH of 5.65.
a) Determine the concentration of C6H5NH3 in the solution if the
concentration of C6H5NH2 is 0.230 M. The pKb of aniline is
9.13.
[C6H5NH3+] =
______M
b)Calculate the change in pH of the solution, ?pH, if 0.386 g
NaOH is added to the buffer for a final volume of 1.45 L. Assume
that any contribution of NaOH to the volume is negligible.
pH
=...
At a certain temperature* (probably not 25 °C), the solubility of silver sulfate, Ag2SO4, is 0.012 mol/L. Calculate its solubility product constant for this temperature. SIG. FIG. (required because number is small) Solubility product constants are very temperature sensitive. They are generally reported at 25°C. Not necessarily using this temperature allows me some flexibility. Answer: At a certain temperature, the solubility of potassium iodate, KIO3, is 36.1 g/L. Calculate its solubility product constant for this temperature. Answer: At a certain...
Solubility product constant Ksp is also important to predict whether the precipitation will occur under the known condition of ion concentration. This can be done by comparing the solubility quotient (Q) with the value of Ksp of the tested compound. 12. A solution of 0.00016 M lead (II) nitrate, or Pb(NO3)2, was poured into 450 mL of 000023 M sodium sulfate, Na2SO4. Would a precipitate of lead(II)sulfate, PbSO4, be expected to form if 250 mL of the lead nitrate solution...
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