Define equilibrium constant for the titration reaction

Reference no: EM13194700

1.) A 2.3014 g sample was digested, dissolved, and treated with barium ion to precipitate the sulfate as BaSO4. After filtration, washing and drying, the dry weight is 0.7586 g. What is the wt% of sulfer in the sample?
a.) 13.567% b.) 13.57% c.) 4.5287% d.) 4.529%

2.) When a dilute solution of a weak base (Ka- 3.5*10^-9) is titrated with a 0.100 M solution of HCl at 25 C, the equilibrium constant for the titration reaction has this value:
a.) 3.5*10^-9 b.) 2.86*10^8 c.) 2.86*10^9 d.) 2.86*10^-6

Reference no: EM13194700

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