Given that the K sp for CaF2 at 25°C is 3.9 × 10–11, will a precipitate form when 0.10 L of 2.3 × 10–4 M CaCl2 is added to 0.50 L of 5.0 × 10–3 M NaF? Assume volumes are additive.
Please help me I have no clue where to start.


  1. 👍 0
  2. 👎 0
  3. 👁 1,809
  1. Calculate concentration of CaCl2 and NaF. Total volume is 0.1L + 0.5L = 0.6 L. Each salt is diluted from the initial volume to the final volume.
    (CaCl2) = 2.3E-4 M x (0.1L/0.6L) = ?
    (NaF) = 5E-3 x (0.5/0.6) = ?

    Calculate Qsp = (Ca^2+)(F^-)^2 and plug in the values from above.
    Compare Qsp with Ksp. If Qsp>Ksp a ppt forms. If Qsp<Ksp a ppt will not form.

    Post your work if you get stuck.

    1. 👍 1
    2. 👎 1

Respond to this Question

First Name

Your Response

Similar Questions

  1. chemistry

    1) Aqueous solutions of potassium sulfate and ammonium nitrate are mixed together. Which statement is correct? A) Both KNO3 and NH4SO4 precipitate from solution B) A gas is released C) NH4SO4 will precipitate from solution D) KNO3

  2. Chemistry

    A mixture contains only NaCl and Al2(SO4)3. A 1.45-g sample of the mixture is dissolved in water and an excess of NaOH is added, producing a precipitate of Al(OH)3. The precipitate is filtered, dried, and weighed. The mass of the

  3. Chemistry-Please help

    A solution contains one or more of the following ions: Hg2 2+,Ba2+ ,Fe2+ and . When potassium chloride is added to the solution, a precipitate forms. The precipitate is filtered off and potassium sulfate is added to the remaining

  4. Chemistry

    what type of reaction is AgF + CaCl2 --> AgCL + CaF2 ?

  1. Chemistry

    What is the formula of the precipitate formed from the precipitation reaction of Pb(NO3)2 and NaI? QUESTION 2 When aqueous solutions of (NH4)3PO4 and KOH are mixed, what precipitate(s) will form? K3PO4 NH4OH no precipitate will

  2. Science

    5. The following balanced equations represent double replacement reactions that each result in the formation of a precipitate. For each reaction, which ratio of reactants would result in the formation of the greatest amount of

  3. Chemistry!!!

    Consider a solution that is 0.022 M in Fe2+ and 0.014 M in Mg+2. A). If potassium carbonate is used to selectively precipitate one of the cations while leaving the other on solution, which cation will precipitate first? What

  4. chemistry

    Given the following solubility constants, which list arranges the solutes in order of increasing solubility? CaCO3: Ksp = 2.8 × 10-9 Ca(OH)2: Ksp = 5.5 × 10-6 CaSO4: Ksp = 9.1 × 10-6 CaF2: Ksp = 5.3 × 10-9 A. CaSO4 < Ca(OH)2 <

  1. Chemistry

    When sulfuric acid is added to magnesium nitrate, is the resulting product soluble or insoluble in water? Does a precipitate form? I think that the product is insoluble, and no precipitate forms. Is this right? The part I'm most

  2. chemistry

    If you had left your copper(II) nitrate/potassium hydroxide precipitate stand for a while, the precipitate would turn into a black powder. The copper doesn’t reduce in this reaction, but one mole of water is produced from the

  3. Chem Help!

    Assume that a given solution caontains Ag+or Ba2+ or a mixture of both. A reasonable method for doing a qualitative analysis on this solution might be sketched out as followes (remember || means a precipitate forms and | means a

  4. Chemistry

    An excess of aqueous AgNO3 reacts with 24.5 mL of 5 M K2CrO4(aq) to form a precipitate. What is the precipitate? Answer: Ag2CrO4 What mass of precipitate is formed? Answer in units of g.

You can view more similar questions or ask a new question.