Dominate the AMPP Cathodic Protection Technician (CP2) Test 2025 – Unleash Your Tech Power!

To convert a saturated copper/copper sulfate electrode (CSE) potential to a saturated calomel electrode (SCE) potential, you need to account for the difference in reference levels of these electrodes.

The standard potential for a saturated calomel electrode is typically around +0.240 V with respect to the standard hydrogen electrode (SHE) while the copper/copper sulfate electrode has a potential that is usually lower than that of the calomel electrode. The exact difference between the two reference electrodes is approximately -0.400 V.

Given a potential of -0.810 V against CSE, you can perform the conversion using the formula:

Potential (SCE) = Potential (CSE) + (Difference in potentials)

Here, the specific conversion calculation would look like this:

Potential (SCE) = -0.810 V + 0.400 V = -0.410 V

However, if you are trying to arrive at the common values listed in the options, ensuring that you are properly considering the offsets for the respective electrodes and the correct leading negative or positive values is essential.

In this case, the option -0.735 SCE results from understanding the comparative potentials. By performing the correct calculation and