Get premium membership and access revision papers with marking schemes, video lessons and live classes.

Processing. Please wait.

In an experiment a gas jar containing some damp iron fillings was inverted in a trough containing some water and the set up was left for 3 days.

a).Why was iron fillings moistened
b).State and explain observation made after 3 days

Answer Text:
a).Because moisture is one of the requirements for rusting to take place
b).The grey iron filling turned to brown due to the formation hydrated iron iii oxide.