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CBSE Class 12-science Answered

Account for the following: "Alkaline medium inhibits the rusting of iron".
Asked by Topperlearning User | 22 Jun, 2016, 03:00: PM
answered-by-expert Expert Answer

In the process of rusting of Iron the hydroxide ions react with ferrous ions from the solution to give reddish brown substance ferrous hydroxide at the cathode. Hydroxide ions are formed by the reduction of Hydrogen ions, in alkaline medium the number of hydrogen ions decreases thereby decreasing the number of hydroxide ions in the solution , slowing the process of rusting of iron.

Answered by | 22 Jun, 2016, 05:00: PM

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