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Problem- 1) What is molar solubility of BaF2 in a solution containing 0.150 M Ba(NO3)2

2) A 1.00 L buffer solution is 0.125 M in HC2H3O2 and 0.115 in NaC2H3O2. Calculate the pH of the solution after the addition of 100. mL of 1.00 M NaOH. The Ka for HC2H3O2 is 1.8*10^-5

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