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Calculate the grams of NaCH3COO required for 150.0 mL of 0.20 M CH3COOH solution to achieve...

  1. Calculate the grams of NaCH3COO required for 150.0 mL of 0.20 M CH3COOH solution to achieve a pH of 4.40. (Assume no volume change.)  (Ka = 1.8 x 10-5 )

  1. What is the pH of 100.0 mL of buffer consisting of 0.20 M CH3COOH/0.20 M NaCH3COOafter 15.0 mL of 0.25 M HCl was added into the solution? (Ka = 1.8 x 10-5)

  1. Are the following solutions reasonable buffers? Please provide an explanation for each answer.
  1. 1.0 M H3PO4 and 1.0 M NaH2PO3
  2. 1.0 M H2SO4 and 1.0 M HCl
  3. 1.0 M NaOH and 0.50 M HCl

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