Fun Corrosion Of Iron Nails

The nail wrapped in magnesium is not corroded.

Corrosion of iron nails. Rusting is the corrosion of iron. Rusting is a specific example of corrosion which occurs when iron or steel reacts with oxygen and water. Protecting iron and preventing rust In this experiment one iron nail is wrapped in magnesium another in copper and one left alone.

Another way to prevent the corrosion of iron is to exclude oxygen and moisture from its surface with a protective coating. Aim of investigation To investigate the major factors that affect the rate of corrosion. Rusting of Iron Primarily due to Attack by Hydrogen Ions This point established it becomes apparent that the rusting of iron is primarily due not to attack by oxygen but by hydrogen ions.

This nail has experienced galvanic corrosion upon reacting with the sodium chloride this causes the surface to degrade and create rust as well as an anodic reaction where iron is oxidised into iron ions and a cathodic reaction where water is oxygenated and reduced to hydroxide ionsLocations of the anode is in the middle and the cathode is at each tip. The magnesium also pushes electrons onto the iron improving its ability to reduce water meaning the pink colour rapidly forms around the entire nail. If the nail is coupled with a more electro-positive metal like zinc magnesium or aluminium rusting is prevented but if on the other hand it is coupled with less electro positive metals like copper the rusting is facilitated.

Upon cooling the agar formed a stable semi-solid gel. This science experiment is all about controlling variables to explore which material will rust an iron nail first. Two iron nails were cleaned and sanded and one of the nails was bent to a 90 angle.

The factors affecting the rate of a chemical reaction 1. For iron to rust oxygen and water must be present. There is shown a minor quantity of blue colour on the bend and in the area this could be due to inadequacies in the oxide substrate.

Iron is oxidized to Fe 2 aq at an anodic site on the surface of the iron which is often an impurity or a lattice defect. Take three iron nails Fe. In this experiment students protect iron nails using painting greasing and sacrificial protection.