Chemistry 9701 · AS & A Level · Equilibria

Equilibria — practice question

All of the solubility information in this question refers to the same temperature. The table shows data for calcium compounds and for compounds of X, an element in Group 2 that has not been identified. What is the missing information for element X?

  • ASolubility of sulfate $= 7.11 \times 10^{-5}$; solubility of hydroxide $= 2.00 \times 10^{-5}$
  • BSolubility of sulfate $= 7.11 \times 10^{-5}$; solubility of hydroxide $= 3.37 \times 10^{-3}$
  • CSolubility of sulfate $= 1.83 \times 10^{-1}$; solubility of hydroxide $= 2.00 \times 10^{-5}$
  • DSolubility of sulfate $= 1.83 \times 10^{-1}$; solubility of hydroxide $= 3.37 \times 10^{-3}$

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