Tuesday, October 27, 2009

Mole Ratio Lab!

Today we did a mole ratio lab, which included the following:

+ ---->+


2Fe + 3CuCl2 ---> 3Cu + 2FeCl3

We:
-wanted to discover the amount of moles of copper made in the reaction of iron and copper ii chloride
- wanted to discover the amount of moles of iron was used in the reaction
- wanted to figure out the ratio of moles of iron to moles of copper
-wanted to figure out the amount of atoms and formula units.

Please refer to lab report for materials and procedures, in-class.

To sum it up:
We mixed the CuCl2 with water, then let the iron nails sit in it for a number of minutes. Before we put in the nails, the solution was bright blue, but with the addition of iron it produced a brownish color, and copper formed on the nails. We scraped the copper off the nails, decanted the copper, and found that 2.25g of copper was produced after 8.19g of CuCl2 was added.

Here is a youtube video very similar to our experiment, except the iron was kept in the solution for a longer time.


(apologies for the spelling errors, this is the most decent video we could find, and it shows all the steps!)

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