Chemistry 102

posted by .

The Ksp for cerium iodate, Ce(IO3)3 is 3.2 e-10. What is the molar solubility of Ce ion in pure water?
= .0019 M

B) A 0.031 M sodium iodate is added as a common ion. What is the concentration of Ce ion with the common ion present?

C) What is the ratio of the Ce ion with the common ion added to the Ce ion in pure water?
Ce ion with common ion / Ce ion in pure water


how do i go about starting this problem for B and C?

  • Chemistry 102 -

    Ksp = (Ce^+3)(IO3^-)^3
    For B, enter IO3^- as 0.031 (from NaIO3). Technically, if S is solubility of Ce(IO3)3, then 3S is concn of IO3^- so in the NaIO3 soln, concn is 3S + 0.031; however, in general, 3S is so small in comparison to the common ions that are added that 3S can be neglected. It is good to leave them in, neglect them, solve the problem for Ce^+3, then check the assumption and see if it is valid. In my many years of doing this I have found one (just 1) case in which the 3S could NOT be neglected.

    For C, just right the ratio of one over the other and you have it.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry

    Thallium (I) iodate is only slightly soluble in water. Its Ksp at 25°C is 3.07 x 10-6. Estimate the solubility of thallium iodate in units of grams per 100.0 ml of water. TlIO3(s) <==> Tl^+ + IO3^- Let x = molar solubility of …
  2. chem

    I'm stuck on this one aswell... 50.0 ml of a 0.0500 M solution of lead (II) nitrate is mixed with 40.0 ml of a 0.200 M solution of sodium iodate at 25°C. Calculate the Pb2+ and IO3- concentrations when the mixture comes to equilibrium. …
  3. CHEMISTRY

    Wondering If I did this correctly so far 50.0 ml of a 0.0500 M solution of lead (II) nitrate is mixed with 40.0 ml of a 0.200 M solution of sodium iodate at 25°C. Calculate the Pb2+ and IO3- concentrations when the mixture comes to …
  4. Chemistry

    You have a 250ml solution of 0.13M calcium iodate. How many grams of potassium iodate need to be added to the solution to begin to precipitate calcium iodate?
  5. chemistry

    You have a 250ml solution of 0.13M calcium iodate. How many grams of potassium iodate need to be added to the solution to begin to precipitate calcium iodate?
  6. chemistry

    You have a 250ml solution of 0.13M calcium iodate. How many grams of potassium iodate need to be added to the solution to begin to precipitate calcium iodate?
  7. chemistry

    Chromium (III) iodate has a Ksp at 25°C of 5.0 x 10–6. 125 mL of a solution contains 0.0050 mol L–1 Cr (III) ion. What is the molar solubility of chromium (III) iodate at 25°C?
  8. Chemistry

    Chromium (III) iodate has a Ksp at 25°C of 5.0 x 10–6. 125 mL of a solution contains 0.0050 mol L–1 Cr (III) ion. What is the molar solubility of chromium (III) iodate at 25°C?
  9. chemistry

    QUESTION 11 Information Set 1: Chromium (III) iodate has a Ksp at 25°C of 5.0 x 10–6. 125 mL of a solution contains 0.0050 mol L–1 Cr (III) ion. What is the molar solubility of chromium (III) iodate at 25°C?
  10. science

    Chromium (III) iodate has a Ksp at 25°C of 5.0 x 10–6. 125 mL of a solution contains 0.0050 mol L–1 Cr (III) ion. Possible answers: a. 8.4 x 10–2 mol L–1 b. 2.2 x 10–3 mol L–1 c. 6.3 x 10–2 mol L–1 d. 2.1 x 10–2 …

More Similar Questions