Solve Chemistry Homework: Calculating Precipitate Mass & Solution Concentration

[Physics197]

Homework Statement

100mL of 0.2mol/L sodium carbonate solution and 200mL of 0.1mol/L calcium nitrate solution are mixed together. Calculate the mass of the calcium carbonate that would precipitate and the concentration of the sodium nitrate solution that will be produced...

Homework Equations

Not sure.

The Attempt at a Solution

Its supposed to be a review question but I don't remember doing anything even close to this question.

Need help on what to do.

 

[symbolipoint]

Write the chemical reaction, balanced. Find the ratios involved and set up the resulting concentration resulting for the sodium nitrate and the mass for calcium carbonate.

 

[Physics197]

Would you use the idea of the limiting reagent to determine how many moles you have of calcium carbonate and sodium nitrate?

Then multiply the moles of calcium carbonate by the molar mass to get the mass

and divide the number of moles of sodium nitrate by the total volume to get the concentration?

 

[symbolipoint]

Would you use the idea of the limiting reagent to determine how many moles you have of calcium carbonate and sodium nitrate?

Yes; that is an excellent idea.

Then multiply the moles of calcium carbonate by the molar mass to get the mass

and divide the number of moles of sodium nitrate by the total volume to get the concentration?

Convert your starting quantities into moles of each. Your reaction stoichiometry will tell you which reactant is the limiting reactant.

 

[Physics197]

I got 0.02 moles of each, and since it has a mole ratio of 1:1, this would mean that both would be completely used up? and wouldn't matter which one I used to calculate the other stuff

 

[Borek]

2xYes.