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II. Gender

Which one of the following aqueous solutions would have the higher concentration of K+ (aq) ions? (Assume total solubility in water.)

I. Prepositional Complements

II. Compound Forms of Prepositions

What is the equilibrium expression for the reaction Cu2S(s) ⇌ 2 Cu+(aq) + S2-(aq) ?

What is the equilibrium expression for the reaction S2F6 (g) ⇌ 2SF2 (g) + F2 (g) ?

III. Verb Meaning

Given the choice of adding ions of Mg 2+ (aq), Ca 2+ (aq), Sr 2+ (aq) or Ba 2+ (aq) to a solution of carbonate ions, CO3 2-, which choice would precipitate an insoluble carbonate compound first? Use the following Ksp data:    MgCO3  Ksp = 6.82 × 10-6 CaCO3  Ksp = 4.96 × 10-9 SrCO3 Ksp = 9.30× 10-10 BaCO3 Ksp = 5.00 × 10-9

I. Interrogatives

Consider a 1.6 × 10-3 M solution of H2SO4. Which of the following statements is NOT true?