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The B4O5(OH)4 2- ion, present in 5.0-mL of a saturated Na2B4O5(OH)4 solution at a measured temperature, is titrated to the bromocresol endpoint with 3.25 mL of 0.291 M HCl.

a. How many moles of B4O5(OH)4 2- are present in the sample?

b. What is the molar concentration of B4O5(OH)4 2- in the sample?

c. Calculate the Ksp for Na2B4O5(OH)4 from this data.

d. What is the free energy change for the dissolution of Na2B4O5(OH)4 at this temperature?

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  • Category:- Chemistry
  • Reference No.:- M9500072

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