Thursday, October 30, 2014

Copper Pipe Issue

Our Situation
Some of the copper pipes under the city of San Francisco have been corroding and a light green/blue paste is always found at sites of corrosion. Also, there are always strange metallic bits found clogging the pipes as well. After some investigation, you found that the areas where there were the most corrosion was always under facilities like film schools, CVS, Walgreens, etc – places where people develop film, and hospitals. Silver Nitrate is a chemical that is often used to develop film and is also used to prevent infection in the eyes or newborn babies.

This reminds me of the Aluminum and Blue lab because there was copper in the liquid before which made it blue. These experiments are like reverse of each other. The copper in the After of this lab reminds me of the silver in the After of the copper lab.

Balanced Chemical Equation for the copper and silver nitrate reaction
NO3+Cu → CuO3+N

I will confirm my chemical equation because we will find what is in the blueish green paste on the pipes and what is causing this to happen. We can figure this out by testing that past to see what is in it. Test the silver solid to see if it is silver. Test water with batteries to see what is in it. We should collect what chemicals it is made of, how it is being formed, and what is happening with the Silver Nitrate.

My answer helps me confirm the chemical equation because it will show the copper is found in the paste and silver nitrate is being split up like the Aluminum and Blue lab. There was a chemical reaction that had split all the chemicals up and changed their location.

Particle Diagram



Zinc and Iodine

Materials
Zinc
Iodine
Vinegar
Beakers

Physical Description
Before:
Zinc
Was a silverish grey color
Tiny specks of Zinc
Iodine
Was a charcoal color
Broken up into smaller pieces
After:
Iodine
The iodine bonded with Vinegar
Zinc
The zinc did not react with the Vinegar and Iodine.
It stayed at the bottom of the beaker.

Quantitative Measurments
Before:
Zinc
2.08g
Iodine
2g
After:
Iodine
3g

Balanced Equation
I2+Zn → I2Zn

My balanced equation is I2+Zn → I2Zn for the Zinc and Iodine lab. In this lab we mixed iodine with vinegar to make a liquid because iodine bonded with the vinegar and it then turned all into a liquid. We then mixed the solution with zinc which layed at the bottom of the beaker. When we tested to see what was mixed in the liquid with the Iodine, we found some Zinc that had bonded with Iodine. This is how we got the second part of the equation.