-Chemistry-

posted by .

I have asked this question before but I was wondering if I solved this question correctly.

A solution of barium chromate is prepared by dissolving 6.3 x 10-3 g of this yellow solid in 1.00 L of hot water. Will solid barium chromate precipitate upon cooling to 25°C?

You want to compare Qsp to Ksp (at 25o C.)
BaCrO4 (s) ==> Ba + CrO4

Ksp = BaCrO4= 1.17×10-10
6.3E-3g/253.33molar mass BaCrO4 = 2.49 x 10-5 mols BaCrO4 in 1
Qsp = (x)(x) = 6.18 x10-10

I feel that I did something wrong (the answer to my question before included silver chromate not barium chromate, hence my confusion)


You haven't answered the question. Will BaCrO4 ppt upon cooling?
You haven't done anything wrong. All of the numbers look good to me. You just need the conclusion. OR tell us what you are confused about.
Another way of solving the problem is to calculate the solubility of BaCrO4 at 25 degrees C from Ksp and compare that molar solubility with the initial hot water molar solubility OR change the molar solubility of BaCrO4 to grams and compare directly with grams BaCrO4 dissolved in the hot water.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Decolorizing

    Question: A compound you have prepared is reported in the literature to have a pale yellow color. When the substance is dissolved in hot solvent to purify it by crystallization, the resulting solution is yellow. Should you use decolorizing …
  2. Chem 12

    Okay, this is a two-part question and the unit is acids and bases. Ka for NH4 is 5.6 x 10^ -10 Kb for NH3 is 1.8 x 10^ -5 1. Determine the pH of a solution prepared by adding 0.0500 mole of solid ammonium chloride to 100mL of a 0.150 …
  3. Chemistry

    A solution of barium chromate is prepared by dissolving 6.3 x 10-3 g of this yellow solid in 1.00 L of hot water. Will solid barium chromate precipitate upon cooling to 25°C?
  4. organic chemistry

    a compound you have prepared is reported in the literature to have a pale yellow color. when the substance is dissolved in hot solvent to purify by crystallization, the resulting solution is yellow. explain if you should us decolorizing …
  5. chemistry

    Bit confused about this question. especially a and b. Not really sure which values to use or how. Thanks! A solution is made by dissolving 1.71g of barium hydroxide, Ba(OH)2 (s), in distilled water and then adding more distilled water …
  6. Chemistry Help Please!!

    How can you precipitate BaCrO4(s) from a solution of barium nitrate and potassium dichromate?
  7. Chemistry

    Write a balanced equation for the following: aqueous barium chloride reacts with aqueous sodium chromate to form aqueous sodium chloride plus solid barium chromate.
  8. Chemistry

    When aqueous solutions of lead(II) ion are treated with potassium chromate solution, a bright yellow precipitate of lead(II) chromate, PbCrO4, forms. How many grams of lead chromate form when a 1.60-g sample of Pb(NO3)2 is added to …
  9. Chemistry I - University Level

    Suppose 5.87 g of barium acetate is dissolved in 300. mL of a 71.0 m M aqueous solution of sodium chromate. calculate the final molarity of barium cation in the solution. You can assume the volume of the solution doesn't change when …
  10. Chemistry (Ksp and Solubility)

    Kindly answer my query as early as possible.Please solve the complete question A solution contains 0.01M Ag+ and 0.001M Ba+2 . ksp of Ag2CrO4 = 2.4*10e-12 ksp of BaCrO4 = 1.17*10e-10 A solution of K2CrO4 is added to this solution. …

More Similar Questions