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Mass of NaCl needed for 50.0 mL of 0.200 M NaCl solution. (Show calculation below.) Change in pH from initial pH after addition of Change in pH from initial Initial pH pH after addition of strong acid strong base 7.05 .45 7.092.47 4.62456 phosphate lo.75 .70 Water 11.89 0.200 M NaCl acetate 4.70 buffer buffer L6,70 QUESTIONS 1. Do chloride or sodium ions have a big effect on pH? What is the evidence that supports your answer? (Hint: Compare the initial pH's of water and 0.200 M NaCl.) 2. Is the 0.200 M NaCl solution buffered or not? What is the evidence that supports your answer?

Mass of NaCl needed for 50.0 mL of 0.200 M NaCl solution. (Show calculation below.) Change in pH from initial pH after addition of Change in pH from initial Initial pH pH after addition of strong acid strong base 7.05 .45 7.092.47 4.62456 phosphate lo.75 .70 Water 11.89 0.200 M NaCl acetate 4.70 buffer buffer L6,70 QUESTIONS 1. Do chloride or sodium ions have a big effect on pH? What is the evidence that supports your answer? (Hint: Compare the initial pH's of water and 0.200 M NaCl.) 2. Is the 0.200 M NaCl solution buffered or not? What is the evidence that supports your answer?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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DATA Mass of NaCl needed for 50.0 mL of 0.200 M NaCl solution (Show calculation below.) pH after addition of Change in pH from initial Initial pH pH after addition of Change in pH from initial strong acid strong base 7.05 2.45 Water I1.89 17.092.47 4.62/456 Lo.75 0.70 0.200 M NaCl acetate 4.70 buffer phosphate buffer QUESTIONS Do chloride or sodium ions have a big effect on pH? What is the evidence that supports your answer? (Hint: Compare the initial pH's of water and 0.200 M NaCl.) 1. 2. Is the 0.200 M NaCl solution buffered or not? What is the evidence that supports your answer?
Transcribed Image Text:DATA Mass of NaCl needed for 50.0 mL of 0.200 M NaCl solution (Show calculation below.) pH after addition of Change in pH from initial Initial pH pH after addition of Change in pH from initial strong acid strong base 7.05 2.45 Water I1.89 17.092.47 4.62/456 Lo.75 0.70 0.200 M NaCl acetate 4.70 buffer phosphate buffer QUESTIONS Do chloride or sodium ions have a big effect on pH? What is the evidence that supports your answer? (Hint: Compare the initial pH's of water and 0.200 M NaCl.) 1. 2. Is the 0.200 M NaCl solution buffered or not? What is the evidence that supports your answer?
Saline is another name for a solution containing sodium chloride. Severely dehydrated patients may be given a buffercd saline solution intravenously to restore their fluid balance. Do you think that a buffered saline solution would contain only sodium chloride in the solution? Justify your answer using your experimental evidence. 3. 4. Use the dilution equation to calculate the number of milliliters of 3.00 M NaCl needed to make 600.0 mL of a saline solution with a final sodium chloride concentration of 0.154 M. Show your work. 5. Calculate the molarity of a solution made by dissolving 85.0 grams of Na;SO4 in enough water to make 250.0 mL of solution. Show your work.
Transcribed Image Text:Saline is another name for a solution containing sodium chloride. Severely dehydrated patients may be given a buffercd saline solution intravenously to restore their fluid balance. Do you think that a buffered saline solution would contain only sodium chloride in the solution? Justify your answer using your experimental evidence. 3. 4. Use the dilution equation to calculate the number of milliliters of 3.00 M NaCl needed to make 600.0 mL of a saline solution with a final sodium chloride concentration of 0.154 M. Show your work. 5. Calculate the molarity of a solution made by dissolving 85.0 grams of Na;SO4 in enough water to make 250.0 mL of solution. Show your work.
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