Question

why dinitrogen pentoxide is more acidic than dinitrogen trioxide

Answer 1

Nitrogen forms at least three acidic oxides. They are .
(1) dinitrogen trioxide, N2O3
(2) nitrogen dioxide, NO2 and
(3) nitrogen pentoxide,N2O5.

N2O3 is the anhydride of nitrous acid, HNO2. It dissolves in water to form this unstable acid.

              N2O3 + H2O = 2HNO2

NO2 dissolves in water forming both nitrous acid and nitric acid, HNO3.

             2NO2 + H2O = HNO2 + HNO3

N2O5 is the anhydride of nitric acid, forms this acid with water.

              N2O5 + H2O = 2HNO3.

Thus, the active principle of an oxy-acid is only the acidic oxide which on hydration forms it, as water by itself is neutral. This is also true of other oxy-acids such as sulphuric acid (SO3+H2O), phosphoric acid (P2O5+3H2O) and perchloric acid (Cl2O7+H2O).

So, it should be clear that the chemical nature of an acidic oxide is almost the same as that of the acid it forms with water.

please mark as brainliest

Answer 2

$\large{ \underline{ \underline{ \underline{ \boxed{ \frak{ \red{Answer :-}}}}}}}$

NO2 dissolves in water forming both nitrous acid and nitric acid, HNO3. N2O5 is the anhydride of nitric acid, forms this acid with water. N2O5 + H2O = 2HNO3. Thus, the active principle of an oxy-acid is only the acidic oxide which on hydration forms it, as water by itself is neutral.