7. You make 1 Liter of an aqueous solution containing 9.20 ml of 57.8 mM acetic...
7. You make 1 Liter of an aqueous solution containing 9.20 ml of 57.8 mM acetic acid and 56.2 mg of sodium acetate (MW = 82.0 g/mole). a. How many moles of acetic acid did you add? b. How many moles of sodium acetate did you add? c. What is the appropriate formula for calculating the pH of the above solution? d. What is the pH of the above solution? Is it acidic or basic? Slightly or strongly so? (Use the same scale as on HW 1)
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7. You make 1 Liter of an aqueous solution containing 9.20 ml of
57.8 mM acetic...
A 1 liter solution contains 0.329 M acetic acid and 0.247 M sodium acetate. Addition of...
A 1 liter solution contains 0.329 M acetic acid and 0.247 M sodium acetate. Addition of 0.271 moles of nitric acid will: (Assume that the volume does not change upon the addition of nitric acid.) Raise the pH slightly Lower the pH slightly Raise the pH by several units Lower the pH by several units Not change the pH Exceed the buffer capacity
39) A 1 liter solution contains 0.311 M acetic acid and 0.414 M sodium acetate. Addition...
39)
A 1 liter solution contains 0.311 M acetic acid and 0.414 M sodium acetate. Addition of 0.078 moles of calcium hydroxide will: (Assume that the volume does not change upon the addition of calcium hydroxide.) Raise the pH slightly Lower the pH slightly Raise the pH by several units Lower the pH by several units Not change the pH Exceed the buffer capacity
3. One liter of buffer solution was prepared by mixing 0.1 mole of acetic acid CH3COOH...
3. One liter of buffer solution was prepared by mixing 0.1 mole of acetic acid CH3COOH and 0.05 mole of sodium acetate CH3COONa. Calculate a. pH of that solution b. How much of a strong base, say NaOH, in mol/L needs to be added to that solution to change its pH to 6.0? Notes and useful data: For acetic acid pK4.75 For carbonic acid pKa 6.3 and pKa 10.3 Sodium acetate CH3COONa dissociates entirely to Na'CH3COO
A1 liter solution contains 0.350 M acetic acid and 0.263 M potassium acetate Addition of 0.289...
A1 liter solution contains 0.350 M acetic acid and 0.263 M potassium acetate Addition of 0.289 moles of hydrobromic acid will: (Assume that the volume does not change upon the addition of hydrobromic acid.) Raise the pH slightly Lower the pH slightly Raise the pH by several units |Lower the pH by several units |Not change the pH Exceed the buffer capacity Submit Answer Retry Entire Group 9 more group attempts remaining A 1 liter solution contains 0.443 M hypochlorous...
#50 A 1 liter solution contains 0.523 M acetic acid and 0.392 M potassium acetate. Addition...
#50 A 1 liter solution contains 0.523 M acetic acid and 0.392 M potassium acetate. Addition of 0.196 moles of hydroiodic acid will: (Assume that the volume does not change upon the addition of hydroiodic acid.)(select all that applies) Raise the pH slightly Lower the pH slightly Raise the pH by several units Lower the pH by several units Not change the pH Exceed the buffer capacity
A 1 liter solution contains 0.288 M nitrous acid and 0.384 M potassium nitrite. Addition of...
A 1 liter solution contains 0.288 M nitrous acid and 0.384 M potassium nitrite. Addition of 0.317 moles of sodium hydroxide will: (Assume that the volume does not change upon the addition of sodium hydroxide.) Raise the pH slightly Lower the pH slightly Raise the pH by several units Lower the pH by several units Not change the pH Exceed the buffer capacity A 1 liter solution contains 0.554 M hypochlorous acid and 0.416 M potassium hypochlorite. Addition of 0.457...
A 1 liter solution contains 0.425 M acetic acid and 0.566 M potassium acetate. Addition of...
A 1 liter solution contains 0.425 M acetic acid and 0.566 M potassium acetate. Addition of 0.467 moles of calcium hydroxide will: (Assume that the volume does not change upon the addition of calcium hydroxide.) Raise the pH slightly Lower the pH slightly Raise the pH by several units - Lower the pH by several units Not change the pH Exceed the buffer capacity
A 1 liter solution contains 0.373 M acetic acid and 0.497 M potassium acetate. Addition of...
A 1 liter solution contains 0.373 M acetic acid and 0.497 M potassium acetate. Addition of 0.093 moles of calcium hydroxide will: (Assume that the volume does not change upon the addition of calcium hydroxide.) Raise the pH slightly Lower the pH slightly Raise the pH by several units Lower the pH by several units Not change the pH Exceed thu ouffer capacity The pK, value for CH, COOH is 4.74. Would a buffer prepared from CH3COOH and CH,COONa with...
1. Determine the number of moles of reagent in the following solutions: a. 25.00 mL of...
1. Determine the number of moles of reagent in the following solutions: a. 25.00 mL of 0.10 M acetic acid b. 5.55 mL of 0.092 M NaOH C. 0.50 mL of 0.087 M HCI 2. A buffer solution contains 0.120 M acetic acid and 0.150 M sodium acetate. a. How many moles of acetic acid and of sodium acetate are present in 50.0 mL of solution? b. If we add 5.55 mL of 0.092 M NaOH to the solution in...
A 1 liter solution contains 0.383 M acetic acid and 0.511 M potassium acetate. Addition of...
A 1 liter solution contains 0.383 M acetic acid and 0.511 M potassium acetate. Addition of 0.422 moles of barium hydroxide will: (Assume that the volume does not change upon the addition of barium hydroxide.) select all that apply: Raise the pH slightly Lower the pH slightly Raise the pH by several units Lower the pH by several units Not change the pH Exceed the buffer capacity
39)
A 1 liter solution contains 0.311 M acetic acid and 0.414 M sodium acetate. Addition of 0.078 moles of calcium hydroxide will: (Assume that the volume does not change upon the addition of calcium hydroxide.) Raise the pH slightly Lower the pH slightly Raise the pH by several units Lower the pH by several units Not change the pH Exceed the buffer capacity
3. One liter of buffer solution was prepared by mixing 0.1 mole of acetic acid CH3COOH and 0.05 mole of sodium acetate CH3COONa. Calculate a. pH of that solution b. How much of a strong base, say NaOH, in mol/L needs to be added to that solution to change its pH to 6.0? Notes and useful data: For acetic acid pK4.75 For carbonic acid pKa 6.3 and pKa 10.3 Sodium acetate CH3COONa dissociates entirely to Na'CH3COO
A1 liter solution contains 0.350 M acetic acid and 0.263 M potassium acetate Addition of 0.289 moles of hydrobromic acid will: (Assume that the volume does not change upon the addition of hydrobromic acid.) Raise the pH slightly Lower the pH slightly Raise the pH by several units |Lower the pH by several units |Not change the pH Exceed the buffer capacity Submit Answer Retry Entire Group 9 more group attempts remaining A 1 liter solution contains 0.443 M hypochlorous...
A 1 liter solution contains 0.288 M nitrous acid and 0.384 M potassium nitrite. Addition of 0.317 moles of sodium hydroxide will: (Assume that the volume does not change upon the addition of sodium hydroxide.) Raise the pH slightly Lower the pH slightly Raise the pH by several units Lower the pH by several units Not change the pH Exceed the buffer capacity A 1 liter solution contains 0.554 M hypochlorous acid and 0.416 M potassium hypochlorite. Addition of 0.457...
A 1 liter solution contains 0.425 M acetic acid and 0.566 M potassium acetate. Addition of 0.467 moles of calcium hydroxide will: (Assume that the volume does not change upon the addition of calcium hydroxide.) Raise the pH slightly Lower the pH slightly Raise the pH by several units - Lower the pH by several units Not change the pH Exceed the buffer capacity
A 1 liter solution contains 0.373 M acetic acid and 0.497 M potassium acetate. Addition of 0.093 moles of calcium hydroxide will: (Assume that the volume does not change upon the addition of calcium hydroxide.) Raise the pH slightly Lower the pH slightly Raise the pH by several units Lower the pH by several units Not change the pH Exceed thu ouffer capacity The pK, value for CH, COOH is 4.74. Would a buffer prepared from CH3COOH and CH,COONa with...
1. Determine the number of moles of reagent in the following solutions: a. 25.00 mL of 0.10 M acetic acid b. 5.55 mL of 0.092 M NaOH C. 0.50 mL of 0.087 M HCI 2. A buffer solution contains 0.120 M acetic acid and 0.150 M sodium acetate. a. How many moles of acetic acid and of sodium acetate are present in 50.0 mL of solution? b. If we add 5.55 mL of 0.092 M NaOH to the solution in...
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