A substance X is reddish brown in colour and has powdery texture. X is a compound produced when iron reacts with moist air.
a) Identify X and write its formula
b) Write the equation for formation of X
c) Which factors promote formation of X in nature?
d) What is the chemical term for this process?
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Answer: (1) X = Fe, Y = Fe2O3
The exposure of element X to moist air forms a reddish brown Y which is a new compound is formed. The reddish brown compound is known as rust Fe2O3.
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