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a) What is the pH of a buffer solution prepared by mixing 120 mL of a...

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Chemistry

a) What is the pH of a buffer solution prepared by mixing 120 mLof a 0.435 M CH3CO2H with 50 mL of a .286 MCH3CO2Na solution?CH3CO2H Ka = 1.75 x10-5

b) What is the resulting pH if we add 10.2 mL of a .513 M HClsolution to this buffer? Does the pH make sense? Why/why not?

c) What is the resulting pH if we add 3.56 mL of a 0.420 M NaOHsolution to the original buffer?

Answer & Explanation Solved by verified expert
4.5 Ratings (862 Votes)
Ka 175 x 105 pKa log ka log 175 x 105 476 Moles of acid molarity volume in L 0435 0120 00522 moles Moles of base molarity volume in L 0286 0050 00143 moles pH of this buffer pH pKa log baseacid pH    See Answer
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