Chemistry · Chemical Reactions and Equations
An iron rod, when exposed to moist air, develops a reddish-brown coating called rust. What is the chemical formula of rust?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Fe(OH)2
- 2FeO
- 3Fe2O3.xH2O✓
- 4Fe(OH)2.2H2O
Correct answer
Fe2O3.xH2O
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