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Chemistry
Among Al2O3, SiO2, P2O3 and SO2 the correct order of acidic strength is
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Q. Among $Al_2O_3, SiO_2, P_2O_3$ and $SO_2$ the correct order of acidic strength is
AIEEE
AIEEE 2004
Classification of Elements and Periodicity in Properties
A
$SO_2< P_2O_3 < SiO_2 < Al_2O_3$
17%
B
$Al_2O_3 < SiO_2< P_2O_3 < SO_2$
65%
C
$Al_2O_3 < SiO_2< SO_2 < P_2O_3$
10%
D
$SiO_2< SO_2 < Al_2O_3 < P_2O_3$
8%
Solution:
Oxide of AI is amphoteric. $SO_2$ is more acidic than $P_2O_3$. Therefore, correct order of acidic character is $AI_2O_3 < SiO_2 < P_2O_3 < SO_2$