![3. Calculate the [H*] in a solution that has a pOH of 4.12. a. 4.1 M b. 9.9 M C. 7.6 x 10-M d. 1.3 x 10-10M e. 4.2 x 10M 4. D](http://img.homeworklib.com/questions/9bb95ec0-7807-11ea-a65e-ad64c88ff403.png?x-oss-process=image/resize,w_560)
Homework Answers
![30* 3. Gluen pot = 4.12 pot = -log [OH-] = 7:12 [OH-] = 104.12 = 7.59x105 m [+) (04-) = 1.00 xiot (Lonic PRODUC) [HT] 1.00xi](http://img.homeworklib.com/questions/9ca3b210-7807-11ea-a06c-6d45c7ca8934.png?x-oss-process=image/resize,w_560)
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3. Calculate the [H*] in a solution that has a pOH of 4.12. a. 4.1 M...
15) Determine the molar solubility of FeCl, in pure water. K A) 0.228 M B ) 0.0301 M C) 0.311 M for FeCl, -2.45 x 1...
15) Determine the molar solubility of FeCl, in pure water. K A) 0.228 M B ) 0.0301 M C) 0.311 M for FeCl, -2.45 x 10 D ) 0.174 M 15 E) 2.45 * 10M 16) 16) Which of the following statements is true? A) Kris related to the formation of complexes B) K is related to acid dissociation C) K, is related to the solubility of a solid ionic species D) Khis related to base dissociation E) K is...
40. What is the pOH of a 0.045 M solution of calcium hydroxide, Ca(OH)2? A) 1.05...
40. What is the pOH of a 0.045 M solution of calcium hydroxide, Ca(OH)2? A) 1.05 B) 12.95 C) 12.65 D) 1.35 41. From Table 16.3, which of the following statements for Carbonic acid is true? See page 7 TABLE 16.3. Acid-Dissociation Constants of Some Common Polyprotic Acids Formula KI Ascorbic HỊCH, 80 X 10+ 16 X 10-12 Carbonic H.CO, 43 X 10 56 x 101 Citric HC,H,Op 74 X 10+ 1.7 X 100 4.0 X 10 Oxalic H.CO 5.9...
3. Calculate and insert the proper values to complete the following table: 8pts) [H+M pH Acidic...
3. Calculate and insert the proper values to complete the following table: 8pts) [H+M pH Acidic or Basic [OH-M Solution 8.21 POH 1.78 x 10 3.70 x 10-2 4. Give definitions of an Arrhenius acid, a Bronsted-Lowry acid, and a Lewis acid. (3pts) 5. Write the two reactions for the complete dissociation of H.SO., a polyprotic acid. 2pts) 6. Calculate the pH of a 0.015 M solution of HBr. Circle your answer. (2pts)
Complete the table for an aqueous solution @ 25°C each row represents one solution Грн POH...
Complete the table for an aqueous solution @ 25°C each row represents one solution Грн POH 3.25 0.25 (H) (OH) Acidic or basic 6.14x10 12.25 1.77 9.83x102 A 0.185M solution of weak acid has a pH of 2.95. Calculate the lonization constant (K) for the acid. For this you will need to determine the relationship between the [HA], and the [H01. You're given [HA] and you'll need to find [H,0+- you can get this from pH. Just as we have...
ormation 38. What is the pH of a 0.20 M solution of NH? K = 18...
ormation 38. What is the pH of a 0.20 M solution of NH? K = 18 x 10 for NH. A) 2.72 B) 11.28 C) 11.98 D) 7.00 39. What are the three structural factors that affect acid strength? A) Amount of oxygen present in the molecule, effect of bond strength: K. B) Stability of the conjugate acid; bond polarity (H-X bond), effect of bond dissociation C) Stability of the conjugate base, amount of hydrogen in the molecule, bond polarity...
SOLUTION CONDITION pH = 4.60 pOH = 5.60 (OH) = 4.5 x 10-6 M H) =...
SOLUTION CONDITION pH = 4.60 pOH = 5.60 (OH) = 4.5 x 10-6 M H) = 4.5 x 10-'M 1. The pH of Solution B is a. 10.61 b. 8.40 c. 7.98 d. 6.66 e. none of these 2. The pOH of Solution A is a. 9.40 b. 8.40 c. 7.88 d. 5.66 e. none of these 3. The pH of Solution Cis a. 12.61 b. 8.65 c. 7.98 d. 6.66 e. none of these 4. The pH of Solution...
help me out, please! answer all the multiple choice. (15) A phosphate buffer solution is prepared by mixing 100. m...
help me out, please! answer all the multiple
choice.
(15) A phosphate buffer solution is prepared by mixing 100. mL. of 0.300 M KH PO, and 150.ml 0.500 M K HPO (a) Calculate the molar concentrations of H:PO, and that of HPO,2 in the buffer solution. (b) What is the pH of the buffer solution? (H,PO, has K,-6.2 x 10 (c) Write a net ionic equation for the bufering reaction against a strong acid, Hjo (d) Calculate the new concentration...
Phosphoric acid is triprotic with the step-wise dissociation shown below. A 1.34 M phosphoric acid solution is prep...
Phosphoric acid is triprotic with the step-wise dissociation shown below. A 1.34 M phosphoric acid solution is prepared. Calculate the equilibrium concentrations of the species indicated. Report all answers in scientific notation using 2 sig figs. Rather than use the quadratic equation, you can make assumptions like we do in class (ie if K<<1, then 0.1-x -0.1) H3PO HO H.PO H3O Kai = 7.5c10-3 Preview Preview Preview H.PO H20 HPo? + H50+ K - 6.2:10 -* Preview Preview HPO H2O...
7. If H,PO, has K, -6.83 x 10, and Hco, has K,-5.8x 10", which is the...
7. If H,PO, has K, -6.83 x 10, and Hco, has K,-5.8x 10", which is the weaker acid? Circle your answer and explain how you know. (Ipt 8. For a solution with pH 9.74, calculate the following: (3pa) [H'] [OH] pOH- 9. (2pas total) a. A solution of a weak acid with concentration 0.11 M. is 8.8 % ionized. Calculate its K, value. K, b. Calculate the K, value of a 0.060 M solution of a monoprotic acid with [H']...
Calculate the hydroxide ion concentration and the POH in an aqueous solution with a pH =...
Calculate the hydroxide ion concentration and the POH in an aqueous solution with a pH = 2.3 at 25°C. a. [OH 1 - 2.0 * 10-12M : POH - 2.30 b. [OH 7 -2.0 * 10-11M: POH = 11.70 C[OH 7 -5.0 x 10-3 M : POH = 11.70 d. [OH ) - 2.0 x 10-12 M : POH = 11.70 e.[OH ) - 2.0*10-12M : POH -8.50 Which of the following solutions is a good buffer system? a. A...
15) Determine the molar solubility of FeCl, in pure water. K A) 0.228 M B ) 0.0301 M C) 0.311 M for FeCl, -2.45 x 10 D ) 0.174 M 15 E) 2.45 * 10M 16) 16) Which of the following statements is true? A) Kris related to the formation of complexes B) K is related to acid dissociation C) K, is related to the solubility of a solid ionic species D) Khis related to base dissociation E) K is...
40. What is the pOH of a 0.045 M solution of calcium hydroxide, Ca(OH)2? A) 1.05 B) 12.95 C) 12.65 D) 1.35 41. From Table 16.3, which of the following statements for Carbonic acid is true? See page 7 TABLE 16.3. Acid-Dissociation Constants of Some Common Polyprotic Acids Formula KI Ascorbic HỊCH, 80 X 10+ 16 X 10-12 Carbonic H.CO, 43 X 10 56 x 101 Citric HC,H,Op 74 X 10+ 1.7 X 100 4.0 X 10 Oxalic H.CO 5.9...
3. Calculate and insert the proper values to complete the following table: 8pts) [H+M pH Acidic or Basic [OH-M Solution 8.21 POH 1.78 x 10 3.70 x 10-2 4. Give definitions of an Arrhenius acid, a Bronsted-Lowry acid, and a Lewis acid. (3pts) 5. Write the two reactions for the complete dissociation of H.SO., a polyprotic acid. 2pts) 6. Calculate the pH of a 0.015 M solution of HBr. Circle your answer. (2pts)
Complete the table for an aqueous solution @ 25°C each row represents one solution Грн POH 3.25 0.25 (H) (OH) Acidic or basic 6.14x10 12.25 1.77 9.83x102 A 0.185M solution of weak acid has a pH of 2.95. Calculate the lonization constant (K) for the acid. For this you will need to determine the relationship between the [HA], and the [H01. You're given [HA] and you'll need to find [H,0+- you can get this from pH. Just as we have...
ormation 38. What is the pH of a 0.20 M solution of NH? K = 18 x 10 for NH. A) 2.72 B) 11.28 C) 11.98 D) 7.00 39. What are the three structural factors that affect acid strength? A) Amount of oxygen present in the molecule, effect of bond strength: K. B) Stability of the conjugate acid; bond polarity (H-X bond), effect of bond dissociation C) Stability of the conjugate base, amount of hydrogen in the molecule, bond polarity...
SOLUTION CONDITION pH = 4.60 pOH = 5.60 (OH) = 4.5 x 10-6 M H) = 4.5 x 10-'M 1. The pH of Solution B is a. 10.61 b. 8.40 c. 7.98 d. 6.66 e. none of these 2. The pOH of Solution A is a. 9.40 b. 8.40 c. 7.88 d. 5.66 e. none of these 3. The pH of Solution Cis a. 12.61 b. 8.65 c. 7.98 d. 6.66 e. none of these 4. The pH of Solution...
help me out, please! answer all the multiple
choice.
(15) A phosphate buffer solution is prepared by mixing 100. mL. of 0.300 M KH PO, and 150.ml 0.500 M K HPO (a) Calculate the molar concentrations of H:PO, and that of HPO,2 in the buffer solution. (b) What is the pH of the buffer solution? (H,PO, has K,-6.2 x 10 (c) Write a net ionic equation for the bufering reaction against a strong acid, Hjo (d) Calculate the new concentration...
Phosphoric acid is triprotic with the step-wise dissociation shown below. A 1.34 M phosphoric acid solution is prepared. Calculate the equilibrium concentrations of the species indicated. Report all answers in scientific notation using 2 sig figs. Rather than use the quadratic equation, you can make assumptions like we do in class (ie if K<<1, then 0.1-x -0.1) H3PO HO H.PO H3O Kai = 7.5c10-3 Preview Preview Preview H.PO H20 HPo? + H50+ K - 6.2:10 -* Preview Preview HPO H2O...
7. If H,PO, has K, -6.83 x 10, and Hco, has K,-5.8x 10", which is the weaker acid? Circle your answer and explain how you know. (Ipt 8. For a solution with pH 9.74, calculate the following: (3pa) [H'] [OH] pOH- 9. (2pas total) a. A solution of a weak acid with concentration 0.11 M. is 8.8 % ionized. Calculate its K, value. K, b. Calculate the K, value of a 0.060 M solution of a monoprotic acid with [H']...
Calculate the hydroxide ion concentration and the POH in an aqueous solution with a pH = 2.3 at 25°C. a. [OH 1 - 2.0 * 10-12M : POH - 2.30 b. [OH 7 -2.0 * 10-11M: POH = 11.70 C[OH 7 -5.0 x 10-3 M : POH = 11.70 d. [OH ) - 2.0 x 10-12 M : POH = 11.70 e.[OH ) - 2.0*10-12M : POH -8.50 Which of the following solutions is a good buffer system? a. A...
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