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What is the pH of a buffer solution that contains 0.350M pyruvic acid and 0.150M sodium...

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Chemistry

What is the pH of a buffer solution that contains 0.350M pyruvicacid and 0.150M sodium pyruvate? Ka = 4.1x10^-3

Select one:

A. 4.72

B. 2.82

C. 2.02

D. 2.76

What is the pH of a 100.0mL buffer solution that contains 0.215Macetic acid and 0.255M sodium acetate after 0.055 mmol HCl isadded. Assume no volume change. Ka = 1.8x10^-5.

Select one:

A. 4.61

B. 4.87

C. 5.03

D. 5.48

Calculate the change in pH after 0.010mole HCl is added of 1L of pure water at 25 degrees Celsius? Assumeno volume change.

Select one:

A. 7

B. 2

C. 5

D. 9

Calculate the change in pH of a buffersolution that originally contains 0.0500M ammonia and 0.0500Mammonium after 0.020 moles of NaOH is added to 1.0L. Assume novolume change. Kb = 1.8x10^-5 for ammonia. Hint you need pKa.

Select one:

A. 0.63

B. 0.18

C. 0.55

D. 0.37

Answer & Explanation Solved by verified expert
3.7 Ratings (707 Votes)
After addition of 0020 moles of NaOH 0020 moles of ammoniumwill    See Answer
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