Among Al 2 O 3, SiO 2, P 2 O 3 and SO 2 the correct order of acid strength is

Question

Among Al 2 O 3, SiO 2, P 2 O 3 and SO 2 the correct order of acid strength is (A) Al 2 O 3< SiO 2< SO 2< P 2 O 3 (B) SiO 2< SO 2< Al 2 O 3< P 2 O 3 (C) SO 2< P 2 O 3< SiO 2< Al 2 O 3 (D) Al 2 O 3< SiO 2< P 2 O 3< SO 2

Tardigrade Admin · Accepted Answer

As the size increases, the basic nature of oxides changes to acidic nature i.e., acidic nature increases.

S O_{2} > P_{2} O_{3} > S i O_{2} > A l O_{3}

Acidic

Weak

Amphoteric

acidic

S O_{2}

and

P_{2} O_{3}

are acidic as their corresponding acids

H_{2} S O_{3}

and

H_{3} P O_{3}

are strong acids.

Q. Among $A l_{2} O_{3}, S i O_{2}, P_{2} O_{3}$ and $S O_{2}$ the correct order of acid strength is

$A l_{2} O_{3} < S i O_{2} < S O_{2} < P_{2} O_{3}$

$S i O_{2} < S O_{2} < A l_{2} O_{3} < P_{2} O_{3}$

$S O_{2} < P_{2} O_{3} < S i O_{2} < A l_{2} O_{3}$

$A l_{2} O_{3} < S i O_{2} < P_{2} O_{3} < S O_{2}$

Q. Among Al2​O3​,SiO2​,P2​O3​ and SO2​ the correct order of acid strength is

Al2​O3​<SiO2​<SO2​<P2​O3​

SiO2​<SO2​<Al2​O3​<P2​O3​

SO2​<P2​O3​<SiO2​<Al2​O3​

Al2​O3​<SiO2​<P2​O3​<SO2​

As the size increases, the basic nature of oxides changes to acidic nature i.e., acidic nature increases. SO2​>P2​O3​>SiO2​>AlO3​ Acidic Weak Amphoteric acidic SO2​ and P2​O3​ are acidic as their corresponding acids H2​SO3​ and H3​PO3​ are strong acids.

Q. Among $A l_{2} O_{3}, S i O_{2}, P_{2} O_{3}$ and $S O_{2}$ the correct order of acid strength is

$A l_{2} O_{3} < S i O_{2} < S O_{2} < P_{2} O_{3}$

$S i O_{2} < S O_{2} < A l_{2} O_{3} < P_{2} O_{3}$

$S O_{2} < P_{2} O_{3} < S i O_{2} < A l_{2} O_{3}$

$A l_{2} O_{3} < S i O_{2} < P_{2} O_{3} < S O_{2}$