Question

We are studying the corrosion rate between a piece of copper and a piece of zinc by dipping them in water and using a DMM to measure the conductivity. In the first test the DMM was set to 2 volts and a reading of 0.930 was recorded. My question is how to find corrosion rate? Given the equation Nzinc= I / 2(96485.33), I being the electrical current in amperes. answer needs to be converted to mil/sec (Surface area submerged is 5.809375 in^2)

Then using that and the equation for corrosion rate CRzinc= d / change in t, d being the depth of metal lost at exposed surfaces.

Please show work,

Thanks

Answer 1