Q17 / 100 · BITSAT 2023 (Memory Based Paper 1) · Chemistry

Which of the following will precipitate first when aqueous solution containing sulphate ions are added?

  • A
    $\mathrm{Mg}^{2+}$
  • B
    $\mathrm{Ca}^{2+}$
  • C
    $\mathrm{Sr}^{2+}$
  • Correct answer
    D
    $\mathrm{Ba}^{2+}$

Solution

Down the group solubility of sulphate decreases. Thus, $\mathrm{Ba}^{2+}$ ions will precipitate out most easily.

Hence, the correct answer is option: 'D'.

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