# Factor(s) that affect percent yield

1. Oct 25, 2005

Hi everyone,
For a science lab, I am asked to find the following:

What factor(s) affect percent yield in a reaction which produces calcium carbonate?

We are given a selection of chemicals to use to get the $$CaCl_2$$ but I have chosen the following:

$$CaCl_2 + Na_2CO_3 --> CaCO_3 + 2NaCl$$

We are to do at least 4 trials of changing the grams of $$Na_2CO_3$$.
I'm not sure what are the factors that affect % yeild. Would is be Molarity?
Any help would be appreciated,
Chris.

Last edited: Oct 25, 2005
2. Oct 25, 2005