Quantitative Analysis

Purpose: This lab will be conducted in the hopes of finding the values of the coefficients of the products and the reactants, and comparing them to the theoretical result, to see if they are equal.

Data and Calculations:

Items	Mass (g)
Empty, dry cup	8.94 g
Iron nails	7.08 g
Iron nails (after reaction)	6.19 g
Beaker and dry product	9.78 g
Dry product net weight	0.84 g

Step	Observations
1	Turned bright ren in green solution. Covered with bubbles.
2	Liquid turned bright green. Nails look like they are covered in tiny spikes. They are much thicker than before, bright brown.
3	When washed, the red rust came off easily turning into fine powder in the liquid.
4	After the water was evaporated, the dry product was a big mass of brown porous material attached to the bottom of the cup. However, when prodded with one of the nails, the mass came apart into extremely fine powder, which reddened significantly.

Analyses and Conclusions:

1) Mass lost by the iron nails: 0.89 g

2) 7.08gFe . 1molFe = 0.127 mol Fe
1 55.8gFe

3) Mass of product: 0.84 g

Conclusion: I have discovered that the experiment was not 100% efficient, because the mass of the product weighs less than the mass lost by the iron nails. This proves that energy was lost somehow during the process. I have also learned that it is possible to find out the chemical equations of reactions by doing the reactions themselves, instead of finding them in books. My answer seems reasonable, because I expected some mass to be lost.