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) SO 2< P 2 O 3< SiO 2< Al 2 O 3 (B) SiO 2< SO 2< Al 2 O 3< P 2 O 3 (C) Al 2 O 3< SiO 2< SO 2< P 2 O 3 (D) Al 2 O 3< SiO 2< P 2 O 3< SO 2

Tardigrade Admin · Accepted Answer

Acidity of the oxides of non metals increases with the electronegativity and oxidation number of the element.

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

A l_{2} O_{3}

is amphoteric.

S i O_{2}

is slightly acidic whereas

P_{2} O_{3}

and

S O_{2}

are the anhydrides of the acids

H_{3} P O_{3}

and

H_{2} S O_{3}

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

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

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

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

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

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

SO2​<P2​O3​<SiO2​<Al2​O3​

SiO2​<SO2​<Al2​O3​<P2​O3​

Al2​O3​<SiO2​<SO2​<P2​O3​

Al2​O3​<SiO2​<P2​O3​<SO2​

Acidity of the oxides of non metals increases with the electronegativity and oxidation number of the element. Al2​O3​<SiO2​<P2​O3​<SO2​ Al2​O3​ is amphoteric. SiO2​ is slightly acidic whereas P2​O3​ and SO2​ are the anhydrides of the acids H3​PO3​ and H2​SO3​

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

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

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

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

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