posted by .

calculate the value of water that is needed to dissolve 1.11 g of CaCl2 in order to prepare a 0.0250 M CaCl2 solution?

  • chemistry -

    Remember the definitions.
    Molarity = # mols/L.
    and # mols = g/molar mass.
    How many moles CaCl2 do you have in 11.1 g CaCl2. That will be 11.1 g CaCl2/molar mass CaCl2.
    Then #mols = M x L.
    You have M and you have mols, calculate L.

  • chemistry -

    The procedure suggested by DrBob 222 will give the correct answer to the question. However, the wording of the question itself could be improved. It might be:
    "Calculate the total volume of solution (water + CaCl2) when a 0.0250 M CaCl2 solution is prepared by dissolving 1.11 g of CaCl2 in a small volume of water and diluting to the calculated volume.".
    The amount of water added cannot be calculated with complete precision since the volume of the solution includes both, water and calcium chloride.

  • chemistry -

    GK is correct; the problem could have been worded more correctly. I assumed you were asking for the solution. Also, I note that I made an error in typing. It isn't 11.1 g CaCl2 but 1.11 g CaCl2.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry/maths

    Using the following stock solutions: NaCl, 100mmol KCl, 200mmol CaCl2, 160mmol Glucose, 5mmol Calculate the volumes of each stock solution and the volume of water needed to prepare 100ml of a single solution containing NaCl at 5.0mmol …
  2. chemistry

    If 2.1 moles of CaCl2 are dissolved in enough water to make a 0.92-liter solution, what is the resulting molarity?
  3. Chemistry

    If you were to prepare a 1.00 molal solution of CaCl2 beginning with water at 27.0 C, what would the final temperature of the solution be (in C)?
  4. Chemistry

    how many grams of CaCl2 would be required to be added to water to prepare 1 liter (1000 ml) of a 1.72% (w/v) aqueous solution of CaCl2?
  5. chemistry

    Calculate the solubility of Cacl2 in g/L based on the experiement. Given 650g of CaCl2 added to 1.0L and allowed to dissolve as much as possible. While the remaining solid CaCl2 is filtered out of the solution and found to have a mass …
  6. chemistry

    how many grams of cacl2 are needed to prepare 6.00L of a 0.400M CaCl2 solution
  7. Chemistry

    How mush CaCl2, in grams, is needed to make 2.0 L of a 3.5M solution?
  8. chemistry

    1. How many grams of calcium chloride (CaCl2) are there in 600.0 mL of an aqueous solution that has a concentration of 0.450 M CaCl2?
  9. chemistry

    Calculate the mass CaCl2 · 6 H2O needed to prepare of 0.123 m CaCl2(aq), by using 373 g of water. Answer in units of g.
  10. chemistry

    Calculate the mass CaCl2 · 6 H2O needed to prepare of 0.123 m CaCl2(aq), by using 373 g of water. Answer in units of g.

More Similar Questions