Monday, December 13, 2010

Zn+CuSo4-->ZnSo4+Cu

In this final reaction, we put solid zinc in our cupric sulfate solution to form zinc sulfate and copper.

In this video, we show how the zinc was torn apart by the solution. You can see it bubbling well Wil stirs the solution.

This is the only single placement reaction in this lab. The zinc was "stronger" than the copper and bonded with the sulfate.

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

We neutralized the newly formed cupric phosphate with sulfuric acid. This turned into a cupric sulfate solution and phosphoric acid.
In this video, we are testing the acidity level of the solution.

This is a double replacement reaction. The Copper is bonding with the sulfate, leaving the phosphate and hydrogen to get together.

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

We used a solution of sodium phosphate to rinse out our funneled cupric chloride. This made cupric phosphate and sodium chloride(salt).
Wil stirred the solution to make sure every thing mixed properly.

Friday, December 10, 2010

CuO+2HCl-->CuCl2+H20

After the blackened CuO sat over two days, we returned to find it turn blue like before. We added hydrochloric acid to it the solution and placed it in a funnel.
 

This allowed the solution to run into the beaker below. This is a double replacement reaction. The Copper and Chloride are forming a solid well the Oxygen and Hydrogen formed to make water.

Patrick is holding the beaker to make sure the pressurized air that is helping us drain the solution faster stays on to ensure a faster drainage.

Cu(OH)2-->CuO+H2O

We placed the cupric hydroxide solution on a hot plate to which created CuO and water through decomposition.

In this picture, Aaron is stirring the solution so the that the beaker wont get to hot and cause it to bubble or shake.

The solution turned black when it was fully heated and thus ended Day 1 of our copper odyssey

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

After creating the blue cupric nitrate solution, with added aqueous sodium hydroxide into in, which produced blue cupric hydroxide and sodium nitrate.
The Blue solution in the picture is the cupric hydroxide before being heated up. Patrick was carefully adding the NaOH while Aarron would start stirring when he stopped pouring.

Wednesday, December 8, 2010

Part A:Cu+4HN03-->Cu(NO3)2+2H2O+2NO2

This when we took the original Copper metal and oxidized it by adding Nitric Acid. This produced a blue looking solution which contained aqueous cupric nitrate, water, and nitrogen dioxide.
 
 
In the picture above, we are pouring the nitric acid into a beaker before adding it to the copper in the beaker to the lower left side of the picture. Wil got down at eye level to make sure we were getting exactly 5ml of HNO3 in our solution