Question: please explain the answer clearly. What is happening in the question? why hcl solution given if we dont combine anything with acid + (aq) SP

please explain the answer clearly. What is happening in the question? why hcl solution given if we dont combine anything with acid

+ (aq) SP + (aq) (aq) CaF Ca2+ 2F- K = 3.9 x 10-11 2(s) (aq) K HF H F (aq) K = 6.8 x 10-4 The dissolution of calcium fluoride is represented by the equilibrium system above at 25C. The F ion is produced when the weak acid HF dissociates. If solid calcium fluoride is added to equal volumes of the following solutions at 25C, in which solution will the most calcium fluoride dissolve? A Pure distilled water B IM HNO 3(aq) CIM NaOH (aq) D Saturated CaF 2(aq)

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