Al2O3(s) + 3H2SO4(aq) → Al2(SO4(aq)) + 3H2(I)O Al2O3(s) + 2NaOH(aq)) + 3H2(I)O → 2NaAl(OH)4(aq)). We can conclude from the equations above that Al2O3(s) is?

Assessment: JAMB UTME - Chemistry - 1993 Subject: Chemistry

Question 1 Report

Al2O3(s) + 3H2SO4(aq) → Al2(SO4(aq)) + 3H2(I)O

Al2O3(s) + 2NaOH(aq)) + 3H2(I)O → 2NaAl(OH)4(aq)).

We can conclude from the equations above that Al2O3(s) is?

Answer Details
The given chemical equations show that when Al2O3 reacts with sulfuric acid, it forms a salt, Al2(SO4)3, and water. When Al2O3 reacts with sodium hydroxide, it forms a salt, NaAl(OH)4. These reactions indicate that Al2O3 can react with both an acid and a base, which means it is amphoteric in nature. Therefore, the correct answer is "an amphoteric oxide".
Read lesson note on Acids, Bases And Salts (JAMB)
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