Striving for Accuracy

This picture represents Kyle removing all of the copper solution in order to get the least percent error.



Jason is getting the excess zinc out of the copper in order to make the weight of the copper as precious as possible.



Weighing the filter paper to subtract the weight of the paper from the copper total so the copper weight is precious.

Zn+CuSO4--->ZnSO4+Cu

This reaction involved replacing copper with zinc. Zinc reacted with cupric sulfate solution forming zinc sulfate and copper. The final picture is copper.

3H2SO4+Cu3(PO4)2--->3CuSO4+2H3PO4

We added another acid-base neutralization reaction as sulfuric acid dissolved the cupric phosphate produced a blue cupric sulfate solution and phosphoric acid. The lightest blue chunks is the dissolivng precipitate.

3CuCl2+2Na3PO4--->Cu3(PO4)2+6NaCl

We added cupric chloride and sodium phosphate to produce blue cupric phosphate and sodium chloride.

CuO+2HCL--->CuCl2+H2O

The black cupric oxide solid underwent an acid-base neutralization reacation with aqueous hydrochloric acid to form green cupric chloride salt soultion, and water. You can see the green cupric chloride forming on the top on the black precipitate.

Cu(OH)2--->CuO+H2O

We added Cu(OH)2 and produced black cupric oxide solid and water. The black cloudiness at the bottom is the cupric oxide solid and on top is the water.

Cu(NO3)2 + 2NaOH --> Cu (OH)2 + 2NaNO3

We added NaOH to the Cu(NO3).