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Complex-Formation Titrations +2 10. Calculate the Ca concentration and pCa logCa D of a solution that results from the mixing of each of the following solutions (buffered at a pH of 10.0): +2 +2...
4. 50.0 mL of 0.00200 M Ca2 solution buffer at pH 10.0 is titrated with 0.00200 M EDTA. At equivalence point (i.e. 50.0 mL EDTA has been added), what is the equilibrium concentration of Ca2, [Ca2...
4. 50.0 mL of 0.00200 M Ca2 solution buffer at pH 10.0 is titrated with 0.00200 M EDTA. At equivalence point (i.e. 50.0 mL EDTA has been added), what is the equilibrium concentration of Ca2, [Ca2], and what is the pCa? The formation constant of CaY, Kaa 5.0 x 1010, and α4 of EDTA at pH 10.0 is 0.35
4. 50.0 mL of 0.00200 M Ca2 solution buffer at pH 10.0 is titrated with 0.00200 M EDTA. At equivalence point...
The formation constant for the lead-EDTA complex (PbY^2 -) is 1.10 times 10^18. At pH 10.0,...
The formation constant for the lead-EDTA complex (PbY^2 -) is 1.10 times 10^18. At pH 10.0, alpha is found to be 0.35. Calculate pPb^2+ for 50.00 mL of a solution of 0.200 M Pb^2+ at pH 10 after the addition of 150.00 mL of 0.010 M EDTA.
Aluminum solutions have to be kept at fairly low pH to prevent formation of hydroxide complex...
Aluminum solutions have to be kept at fairly low pH to prevent formation of hydroxide complex ions. A buffer was prepared using 0.25 MHC_2H_3O_2 (Ka - 1 76 times 10^-5) and mixing in some KC_2H_3O_2. How many grams of KC_2H_3O_2 must be added to 50.0 mL of 0.10 M HC_2H_3O_2, solution to make a pH = 4.0 buffer?
10. Calculate the pH of a solution made by mixing 10.0 mL of 0.100 HCI and 15.0 ml of 0.100 M 11. Indicate each of...
10. Calculate the pH of a solution made by mixing 10.0 mL of 0.100 HCI and 15.0 ml of 0.100 M 11. Indicate each of the following aqueous solutions is acidic, basic, or neutral: KOH HI
Calculate the pH of the following solutions 1. A solution that is 6.0×10−2 M in potassium...
Calculate the pH of the following solutions 1. A solution that is 6.0×10−2 M in potassium propionate (C2H5COOK or KC3H5O2 ) and 8.5×10−2 M in propionic acid (C2H5COOH or HC3H5O2 ). The Ka of propionic acid is 1.3×10-5. 2. A solution that is 8.0×10−2 M in trimethylamine, (CH3)3N, and 0.12 M in trimethylammonium chloride, (CH3)3NHCl. The Kb of trimethylamine is 6.4×10-5. 3. A solution that is made by mixing 50.0 mL of 0.16 M acetic acid and 50.0 mL of...
Calculate the molar Y^4- concentration in a 0.0350 M EDTA solution buffered to pH of 11.00....
Calculate the molar Y^4- concentration in a 0.0350 M EDTA solution buffered to pH of 11.00. At pH 11.00 alpha_4 is 0.85. 2.98 times 10^-2 7.23 times 10^-3 3. 10^-3 3.41 times 10^-8 4.27 times 10^-4
To determine the Ca^2+ concentration in water sample, a standard EDTA solution of 0.01988 M was...
To determine the Ca^2+ concentration in water sample, a standard EDTA solution of 0.01988 M was used to titrate 25 ml. of the sample solution with the presence of an ammonium buffer (pH 10). If 15.80 ml. of the standard EDTA was used to reach the end point, calculate the molar concentration and the ppm concentration of the unknown Ca^2+ (atomic weight of Ca = 40.08g/mole) solution The amount of 0.2915g of benzoic acid was dissolved in 100 ml. of...
Calculate [OH -] and pH for each of the following solutions. (a) 0.0037 M KOH [OH-]...
Calculate [OH -] and pH for each of the following
solutions.
(a) 0.0037 M KOH
[OH-]
= M
pH =
(b) 0.0518 g of KOH in 530.0 mL of solution
[OH -]
= M
pH =
(c) 21.2 mL of 0.00517 M Ca(OH)2 diluted to 500
mL
[OH -]
= M
pH =
(d) A solution formed by mixing 29.0 mL of 0.000350 M
Ca(OH)2 with 83.0 mL of 5.5 x 10-3 M
KOH
[OH -]
= M
pH =
Calculate [OH ]and pH...
2 poin QUESTION 5 What is the value of conditional formation constant, Kr. for the EDTA-complex...
2 poin QUESTION 5 What is the value of conditional formation constant, Kr. for the EDTA-complex with Cu2+ at pH 10.07 Kr(Cuy) - 6.03x1018 Cu2+ + EDTA CuY2 (Use Table 11-1 in the textbook as a reference.) 1.2.01 x 1019 2.1.81 x 1018 3.3.21 x 1015 O4 7.66 x 10-20 5.6.03 x 1018 QUESTION 6 2 poir Consider titration of 24.00 ml of 0.0880 M Cuat solution with 0.110 M EDTA at pH 10.0. Find the concentration of free Cu2+...
Calculate [OH -] and pH for each of the following solutions. (a) 0.0088 M RbOH [OH-]...
Calculate [OH -] and pH for each of the following solutions. (a) 0.0088 M RbOH [OH-] = M pH = (b) 0.02 g of LiOH in 490.0 mL of solution [OH -] = M pH = (c) 89.8 mL of 0.00602 M Ca(OH)2 diluted to 600 mL [OH -] = M pH = (d) A solution formed by mixing 51.0 mL of 0.000290 M Ca(OH)2 with 83.0 mL of 6.8 x 10-3 M RbOH [OH -] = M pH =
4. 50.0 mL of 0.00200 M Ca2 solution buffer at pH 10.0 is titrated with 0.00200 M EDTA. At equivalence point (i.e. 50.0 mL EDTA has been added), what is the equilibrium concentration of Ca2, [Ca2], and what is the pCa? The formation constant of CaY, Kaa 5.0 x 1010, and α4 of EDTA at pH 10.0 is 0.35
4. 50.0 mL of 0.00200 M Ca2 solution buffer at pH 10.0 is titrated with 0.00200 M EDTA. At equivalence point...
The formation constant for the lead-EDTA complex (PbY^2 -) is 1.10 times 10^18. At pH 10.0, alpha is found to be 0.35. Calculate pPb^2+ for 50.00 mL of a solution of 0.200 M Pb^2+ at pH 10 after the addition of 150.00 mL of 0.010 M EDTA.
Aluminum solutions have to be kept at fairly low pH to prevent formation of hydroxide complex ions. A buffer was prepared using 0.25 MHC_2H_3O_2 (Ka - 1 76 times 10^-5) and mixing in some KC_2H_3O_2. How many grams of KC_2H_3O_2 must be added to 50.0 mL of 0.10 M HC_2H_3O_2, solution to make a pH = 4.0 buffer?
10. Calculate the pH of a solution made by mixing 10.0 mL of 0.100 HCI and 15.0 ml of 0.100 M 11. Indicate each of the following aqueous solutions is acidic, basic, or neutral: KOH HI
Calculate the molar Y^4- concentration in a 0.0350 M EDTA solution buffered to pH of 11.00. At pH 11.00 alpha_4 is 0.85. 2.98 times 10^-2 7.23 times 10^-3 3. 10^-3 3.41 times 10^-8 4.27 times 10^-4
To determine the Ca^2+ concentration in water sample, a standard EDTA solution of 0.01988 M was used to titrate 25 ml. of the sample solution with the presence of an ammonium buffer (pH 10). If 15.80 ml. of the standard EDTA was used to reach the end point, calculate the molar concentration and the ppm concentration of the unknown Ca^2+ (atomic weight of Ca = 40.08g/mole) solution The amount of 0.2915g of benzoic acid was dissolved in 100 ml. of...
Calculate [OH -] and pH for each of the following
solutions.
(a) 0.0037 M KOH
[OH-]
= M
pH =
(b) 0.0518 g of KOH in 530.0 mL of solution
[OH -]
= M
pH =
(c) 21.2 mL of 0.00517 M Ca(OH)2 diluted to 500
mL
[OH -]
= M
pH =
(d) A solution formed by mixing 29.0 mL of 0.000350 M
Ca(OH)2 with 83.0 mL of 5.5 x 10-3 M
KOH
[OH -]
= M
pH =
Calculate [OH ]and pH...
2 poin QUESTION 5 What is the value of conditional formation constant, Kr. for the EDTA-complex with Cu2+ at pH 10.07 Kr(Cuy) - 6.03x1018 Cu2+ + EDTA CuY2 (Use Table 11-1 in the textbook as a reference.) 1.2.01 x 1019 2.1.81 x 1018 3.3.21 x 1015 O4 7.66 x 10-20 5.6.03 x 1018 QUESTION 6 2 poir Consider titration of 24.00 ml of 0.0880 M Cuat solution with 0.110 M EDTA at pH 10.0. Find the concentration of free Cu2+...
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