1.

Neutralwater with pH about 7 becomes slightly acidic when aerated this is because

Answer»

it is a redox REACTION
metalic iron acts as a reducing agent
`O_(2)` acts as an OXIDISING agent
metallic iron is reduced to `FE^(3+)`

Solution :`4Fe+3O_(2)rarr4Fe^(3+)+6O^(2-)` ltrbgt This reaction is a redox reaction in this reaction metallic fe is oxidlised to `Fe^(3+)` and `O_(2)` reduced to `O^(2-)`


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