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  1. The acid dissociation Ka of acetic acid HCH3CO2 is 1.8 x10-5. Calculate the pH of a 2.0 x 10-1aqueous solution of acetic acid. Round your answer to 2 decimal places.
  2. Suppose a 0.040aqueous solution of sulfuric acid (H2SO4) is prepared. Calculate the equilibrium molarity of SO4-2.

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