Problem: A 25.0 mL sample of 0.150 M butanoic acid is titrated with 0.150 M sodium hydroxide solution. What is the pH before any base is added? The Ka of butanoic acid is 1.5x10 –5. 4.00 2.83 .0015 4.82 12.00

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A 25.0 mL sample of 0.150 M butanoic acid is titrated with 0.150 M sodium hydroxide solution. What is the pH before any base is added? The Ka of butanoic acid is 1.5x10 –5.

  1. 4.00
  2. 2.83
  3. .0015
  4. 4.82
  5. 12.00

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