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1.The half‑equivalence point of a titration occurs half way to the equivalence point, where half of...

1.The half‑equivalence point of a titration occurs half way to the equivalence point, where half of the analyte has reacted to form its conjugate, and the other half still remains unreacted. If 0.340 moles of a monoprotic weak acid (?a=1.0×10−5) is titrated with NaOH, what is the pH of the solution at the half‑equivalence point?

2.A generic salt, AB2AB2, has a molar mass of 269269 g/mol and a solubility of 2.602.60 g/L at 25 °C.

AB2(s)↽−−⇀A2+(aq)+2B−(aq)AB2(s)↽−−⇀A2+(aq)+2B−(aq)

What is the ?spKsp of this salt at 25 °C?

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