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Dear student,
Most oxides of non metals are acidic in nature because they give acid
After recating with H2O as ;
​​​​CO2 + H2O = H2CO3
most of the oxides of metals are basic in nature as they form base upon reaction with water as;
K2O + H2O = KOH
Amphoteric oxides are the oxides which react with acid as well as bases to give salt and water and are insoluble in water as ;
Al2O3+6HCl→2AlCl3+3H2O
Al2O3+2NaOH→2NaAlO2+H2O
Most oxides of non metals are acidic in nature because they give acid
After recating with H2O as ;
​​​​CO2 + H2O = H2CO3
most of the oxides of metals are basic in nature as they form base upon reaction with water as;
K2O + H2O = KOH
Amphoteric oxides are the oxides which react with acid as well as bases to give salt and water and are insoluble in water as ;
Al2O3+6HCl→2AlCl3+3H2O
Al2O3+2NaOH→2NaAlO2+H2O
Hence carbondioxide is acidic, potassiumoxide is basic and aluminium oxide is amphoteric in nature.
Regards!!
Regards!!