Show an equation to prove non metals produces acidic oxides
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Answer:
CO2 + H2O = H2CO3 (carbonic acid)
Explanation:
Some prominent examples of nonmetal oxides are CO2, NO2, SO2, SO3 and P2O5.
Gaseous oxides like CO2, NO2 and SO2 turn MOIST blue litmus red, just as acids do. This conclusively proves their acidic nature.
When these oxides are dissolved in water, they react and form acid solutions that also turn blue litmus red.
CO2 + H2O = H2CO3 (carbonic acid)
SO3 + H2O = H2SO4 (sulphuric acid)
N2O5 + H2O = 2HNO3 (nitric acid)
Their acidic nature can also be verified with the pH paper, as the pH values of such acidic solutions would always be much less than 7.
Like acids, oxides of nonmetals also react with alkalis to form salts by the process of neutralization.
2KOH + CO2 = K2CO3 + H2O
2NaOH + SO3 = Na2SO4 + H2O
2NaOH + 2NO2 = NaNO2 + NaNO3 + H2O
Thus, chemically, there is not much difference between a nonmetal oxide and the acid it forms by hydration.
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