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02-23-2008, 09:44 PM
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| Chemistry Acid-Base Problem? Dissassociation of oxalic acid H2C2O4. Constant indicated: H2C2O4 -> 2H + H2C2O4 K= 3.78 X 10^-6 A) What volume of 0.400 molar NaOH is required to neutralize completely a 5.00 x 10 ^-3 mol sample of pure oxalic acid ? B) Give equations representing the first and second dissociations of oxalic acid C) Calculate the value of the fist disassociation constant, k1, if the value of the second, k2, is 6.40 x 10^-5 D) To a .015 molar solution of oxalic acid, a strong acid is added until the pH is .0. Calcualate the [C204]^-2 in the resulting solution. (Assume volume change is negligible) E) Calculate the value of the equilibrium constant Kb, for the reaction that occurs when solid Na2C2O4 is dissolved in water.      |
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