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Please tell me about the reactions of nitric acid(very dil. , dil. and conc. ) with metals.........
Dear student,
Nitric acid behaves differently with different metals at different concentrations.
i) With sodium, potassium and calcium the reaction is highly explosive.
ii) With magnesium and manganese
With magnesium and manganese, cold and extremely dilute (1%) nitric acid, reacts to yield hydrogen as explained above.
iii) With Copper
Copper reacts with cold and dilute nitric acid to yield copper nitrate, water and nitric oxide.
The formed nitric oxide combines with the oxygen of air to give brown fumes of NO2.
Copper reacts with cold or hot concentrated nitric acid to yield copper nitrate, water and nitrogen dioxide.
iv) With Zinc
Zinc reacts with cold and dilute nitric acid to yield zinc nitrate, water and nitric oxide.
Zinc reacts with cold or hot concentrated nitric acid to yield zinc nitrate, water and nitrogen dioxide.
v) With Iron
Iron reacts with cold and dilute nitric acid to give ferrous nitrate, water and nitric oxide.
Iron reacts with cold or hot concentrated nitric acid to give ferric nitrate, water and nitrogen dioxide.
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