Common Solubility Equilibrium Calculation Questions


This topic is part of the HSC Chemistry course under the section Solution Equilibrium.

HSC Chemistry Syllabus

  • Derive equilibrium expressions for saturated solutions in terms of Ksp and calculate the solubility of an ionic substance from its Ksp value

  • Predict the formation of a precipitate given the standard reference values for Ksp


Common Solution Equilibrium Calculation Questions with Working

 This video will demonstrated worked examples for a variety of common solution equilibrium questions. 


    Watch the video for step by step explanations for the following questions.

    Example 1

    Calculate the concentrations of barium and hydroxide ions in a saturated solution of barium hydroxide at 25ºC.

    Example 2

    Calculate the maximum mass of NaOH(s) that can be added to 250.0 mL of 0.100 mol L–1 Ba(NO3)2(aq) solution before a precipitate is formed.

    Example 3

    Determine whether a precipitate will form when 250.0 mL of 0.150 mol L–1 NaOH(aq) is mixed with 250.0 mL of 0.0800 mol L–1 Ba(NO3)2(aq) at 25ºC. Show relevant calculations.

    Example 4

    Some amount of solid barium sulfate is added to 200.0 mL of 1.00 mol L–1 sodium sulfate at 25ºC. Calculate the solubility of barium sulfate in this solution.


    Previous Section: Effect of Temperature on Solubility

    Next Section:  Acid-base Dissociation Constants (Ka and Kb)