when potassium carbonate solution is added to a solute of a calcium nitrate, a precipitate of calcium carbonate is formed. 25ml of 0.410mol/L potassium carbonate is added to 15mL of 1.05mol/L calcium nitrate solution.

Calculate the mass of calcium carbonate precipitated.

Question

when potassium carbonate solution is added to a solute of a calcium nitrate, a precipitate of calcium carbonate is formed. 25ml of 0.410mol/L potassium carbonate is added to 15mL of 1.05mol/L calcium nitrate solution. 

Calculate the mass of calcium carbonate precipitated.

rane · Answer

my q' is which moles of a substance i can use to find the mass of calcium carbonate. 
potassium carbonate or calcium nitrate?

wolfe8 · Answer

Well, which one is the limiting reactant? Hint: It's what you have the least in proportion to what you need.

rane · Answer

potassium carbonate?

wolfe8 · Answer

Idk I didn't do it myself. Lemme help. What is the balanced equation and what are the number of moles for each reactant?

rane · Answer

K2CO3 + Ca(NO3)2 ===> 2KNO3 + CaCO3

wolfe8 · Answer

And the number of moles?

rane · Answer

n(K2CO3) = 0.01025mols
n(Ca(NO3)2) = 0.0157mols

wolfe8 · Answer

Now divide those with the number of moles required for the reaction(the constant in front of their formulas) and see which one is the smallest. That would be your limiting factor.

rane · Answer

yh ik how to find the limiting reagent. but just couldn't figure out which to use anyways thank you

wolfe8 · Answer

Oh well you use the moles of the limiting agent. Limiting means it's the one that determines how much product you can produce.

anonymous · Answer

ok so the limiting reactant can be found by converting your moles and using the balanced equation as a ratio to find the precipatate which is calcium carbonate. Now it would looke like this. |dw:1386491720128:dw|

anonymous · Answer

The smallest amount is the limiting reactant.