A buffer is created by combining 325.0 mL of 0.750 M CH3COOH with 225.0 mL of...
A buffer is created by combining 325.0 mL of 0.750 M CH3COOH with 225.0 mL of 0.500 M NaCH3COO. (Ka for CH3COOH = 1.76 x 10-5)
a)What is the pH of the buffer both before and after the addition of 25.00 mL 1.00 M HCl?
b)What volume of 1.75 M NaOH would be required to position the buffer at it's ½ equivalence point (pKa point)? What is the pH of the buffer at this time?
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A buffer is created by combining 325.0 mL of 0.750 M
CH3COOH with 225.0 mL of...
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you prepared your initial buffer by mixing 30 mL of CH3COOH, 10 mL of NaCH3COO, and 360 mL of DI water concertation is 3M for both. a)Predict pH b) using the Henderson-Hasselbalch equation to determine the pH c. Prediction of whether this new buffer solution have a higher buffering capacity towards HCl, or a lower buffering capacity towards HCl d. Prediction of whether this new buffer solution will have a higher buffering capacity towards NaOH, or a lower buffering capacity...
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1. What is the pH of a buffer consisting of 0.30 M CH3COOH & 0.20 M NACH:COO? Ka= 1.8 x 10-5 2. What is the pH of the buffer with 0.10 M NH3 and 0.20 M NH4NO3? Kl = 1.8 x 10-5 3. What is the pH of a buffer formed from combining 10 mL of 0.250 M HCl with 90 mL of 0.150 M NH3? (K = 1.8 x 10-) 4. Calculate the pH of the solution that results...
5. Calculate the grams of NaCH3COO required for 100.0 mL of 0.20 M CH3COOH solution to...
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A buffer solution is prepared by combining 750.0 ml of 1.00 M of ammonia and 250...
A buffer solution is prepared by combining 750.0 ml of 1.00 M of ammonia and 250 ml of 1.00 M ammonium chloride. What is the pH of the buffer? ( Ka of NH4+=5.6*10^-10, Kb of NH3= 1.8*10^-5)
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1. What is the pH of a buffer consisting of 0.30 M CH3COOH & 0.20 M NACH:COO? Ka= 1.8 x 10-5 2. What is the pH of the buffer with 0.10 M NH3 and 0.20 M NH4NO3? Kl = 1.8 x 10-5 3. What is the pH of a buffer formed from combining 10 mL of 0.250 M HCl with 90 mL of 0.150 M NH3? (K = 1.8 x 10-) 4. Calculate the pH of the solution that results...
5. Calculate the grams of NaCH3COO required for 100.0 mL of 0.20 M CH3COOH solution to achieve a pH of 4.40. (Assume no volume change.) K = 1.8 x 10-5 6. What is the pH of 100.0 mL of buffer consisting of 0.20 M CH3COOH/0.20 M NaCH3COO after 10.0 mL of 0.20 M HC1 was added into the solution ? Kg = 1.8 x 10-5 7. The pH of a sodium acetate-acetic acid buffer is 4.80. Calculate the ratio of...
A buffer at pH of 4.35 contains CH3COOH at a concentration of 0.60 M and CH3COONa at a concentration of 0.30 M. What will be the pH when 75.8 mL of 0.980 M NaOH is added to 450.4 mL of the buffer? The pKa of CH3COOH is 4.76 dlace of
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