chemistry

posted by .

A solution contains 0.245 of dissolved lead (lead ion or Pb2+.)
How many moles of sodium chloride must be added to the solution to completely precipitate all of the dissolved lead?
What mass of sodium chloride must be added?

  • chemistry -

    Pb^+2 + 2NaCl --> PbCl2 + 2Na^+

    Convert 0.245 g Pb^+2 to moles. moles = grams/molar mass

    Using the coefficients in the balanced equation, convert moles Pb to moles NaCl. That gives you part a.

    Convert moles NaCl to grams. g = moles x molar mass. That gives you part b.

  • chemistry -

    0.00097973

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry

    A solution contains an unknown mass of dissolved silver ions. When potassium chloride is added to the solution, a white precipitate forms. The precipitate is filtered and dried and then found to have a mass of 245 mg. What mass of …
  2. Chemistry

    A solution contains 0.133 g of dissolved Lead. How many moles of soduim chloride must be added to the solution to completly precipitate all of the disolved lead?
  3. Chemistry

    A solution contains 0.133 g of dissolved Lead. How many moles of sodium chloride must be added to the solution to completely precipitate all of the disolved lead?
  4. Chemistry

    If 32.0 mL lead(II) nitrate solution reacts completely with excess sodium iodide solution to yield 0.545 g precipitate, what is the molarity of lead(II) ion in the original solution?
  5. Chemistry

    7 grams of chloride was dissolved in water. 20 ml of lead(II)nitrate was used to completely precipitate all chloride (assume atomic mass of 35g/mol). What is the molarity of the Lead(II) Nitrate solution.
  6. Chemistry

    7 grams of chloride was dissolved in water. 20 ml of lead(II)nitrate was used to completely precipitate all chloride (assume atomic mass of 35g/mol). What is the molarity of the Lead(II) Nitrate solution.
  7. chemistry

    What concentration of the lead ion, Pb^{2+} , must be exceeded to precipitate PbCl2 from a solution that is 1.00 x 10^{-2} M in the chloride ion, Cl^- ?
  8. chemistry

    What mass of lead (II)chloride would precipitate if a solution containing 8,28 g of lead (II) ions(Pb2+) reacts with excess HCl?
  9. Chemistry

    A 10.00 gram solid sample consisting of a mixture of sodium chloride and potassium sulfate is dissolved in 100.0 mL of water is combined with another 200.0 mL solution that contains excess aqueous lead(II) nitrate. Upon mixing the …
  10. science

    In an experiment to determine the solubility of lead chloride (PbCl2), 5.6g of (NH4)2SO4 was added to a 250ml solution containing an unknown amount of dissolved lead chloride (PbCl2) resulting in the formation of Lead sulfate precipitate. …

More Similar Questions