Question

The reddish brown coating formed on the surface of iron when it reacts with atmospheric oxygen and moisture is.​

Answer 1

Answer:

In contrast to these metals, when iron corrodes, it forms a red-brown hydrated metal oxide (Fe2O3•xH2O), commonly known as rust, that does not provide a tight protective film (Figure 20.8. 1). Instead, the rust continually flakes off to expose a fresh metal surface vulnerable to reaction with oxygen and water.