A) 13.5
B) 27
C) 9
D) 102
Correct Answer: C
Solution :
From the molecular formula \[(A{{l}_{2}}{{O}_{3}})\], it is clear that valency of metal, Al is 3. Hence, equivalent weight of \[\text{Al}=\frac{\text{atomic}\,\text{weight}}{\text{valency}}\] \[=\frac{27}{3}=9\]
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