A) \[A{{l}_{2}}{{O}_{3}}\]
B) \[N{{a}_{2}}O\]
C) \[S{{O}_{2}}\]
D) \[A{{l}_{2}}{{O}_{3}}\]
Correct Answer: D
Solution :
\[A{{l}_{2}}{{O}_{3}}\]is an amphoteric oxide. It dissolves in both acid and base. \[A{{l}_{2}}{{O}_{3}}+3{{H}_{2}}S{{O}_{4}}\xrightarrow{{}}A{{l}_{2}}{{(S{{O}_{4}})}_{3}}+3{{H}_{2}}O\] \[A{{l}_{2}}{{O}_{3}}+2NaOH\xrightarrow{{}}2NaA{{l}_{2}}+{{H}_{2}}O\]
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