Among Al_2O_3 , SiO_2 , P_2O_3  and SO_2 the correct order of acid strength is

  • Option 1)

    SO_2< P_2O_3<SiO_2<Al_2O_3

  • Option 2)

    SiO_2<SO_2<Al_2O_3 < P_2O_3

  • Option 3)

    Al_2O_3 < SiO_2<SO_2< P_2O_3

  • Option 4)

    Al_2O_3 < SiO_2< P_2O_3<SO_2

 

Answers (1)

As we learnt in

Acidic oxides of oxygen -

Non metals oxides are generally acidic 

- wherein

CO2,SO2,SO3,NO2,N2O5

 

 Acidity of the oxides of non metals increases with the electronegativity and also the oxidation number of the element


Option 1)

SO_2< P_2O_3<SiO_2<Al_2O_3

This is incorrect option

Option 2)

SiO_2<SO_2<Al_2O_3 < P_2O_3

This is incorrect option

Option 3)

Al_2O_3 < SiO_2<SO_2< P_2O_3

This is incorrect option

Option 4)

Al_2O_3 < SiO_2< P_2O_3<SO_2

This is correct option

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