two iron club boards were corroded spillage of dil.Hcl in one cup board and accumulation of some rain water in the other cup board were observed explain the type of corrosion that happened in the two cases and thier corrosion mechanism
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Answer:
Reaction involved-
CaCO
3
+2HCl→CaCl
2
+CO
2
+H
2
O
The evolved gas is carbon dioxide which when passes through lime water turns it milky.
Ca(OH)
2
+CO
2
→H
2
O+CaCO
3
⇐ due to formation of this compounds
when excess CO
2
is passed
CaCO
3
+H
2
O+CO
2
→Ca(HCO
3
)
2
Bicarbonate is formed which again clears the solution.
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