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Reactivity Towards Air

All members o...

Question

All members of group 14 when heated n in oxygen form oxides. Which of the following is the correct trend of oxides?

Dioxides

C O_{2}, S i O_{2}

and

G e O_{2}

are acidic while

S n O_{2}

and

P b O_{2}

are amphoteric.

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CO, GeO, SnO and PbO are amphoteric.

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Monoxides react with haemoglobin to form toxic compounds.

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All oxides burn with blue flame.

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Solution

The correct option is A Dioxides $C O_{2}, S i O_{2}$ and $G e O_{2}$ are acidic while $S n O_{2}$ and $P b O_{2}$ are amphoteric.
Answer:- (A) Dioxides $C O_{2}, S i O_{2}, a n d G e O_{2} are acidic while S n O_{2} a n d P b O_{2} are amphoteric$
Being acidic $C O_{2}, S i O_{2} a n d G e O_{2}$ react only with bases.
$C O_{2} a c i d + 2 N a O H b a s e ⟶ N a_{2} C O_{3} s a l t + H_{2} O$
$S i O_{2} a c i d + 2 N a O H b a s e ⟶ N a_{2} S i O_{3} s a l t + H_{2} O$
$G e O_{2} a c i d + 2 N a O H b a s e ⟶ N a_{2} G e O_{3} s a l t + H_{2} O$
$S n O_{2} a n d P b O_{2}$ react with both acids and bases. Thus, amphoteric in nature.
$S n O_{2} a c i d + 2 N a O H b a s e ⟶ N a_{2} S n O_{3} s a l t + H_{2} O$
$S n O_{2} b a s e + 4 H C l a c i d ⟶ S n {C l}_{4} s a l t + 2 H_{2} O$
$P b O_{2} a c i d + 2 N a O H b a s e ⟶ N a_{2} P b O_{3} s a l t + H_{2} O$
$P b O_{2} b a s e + 4 H C l a c i d ⟶ P b {C l}_{4} s a l t + 2 H_{2} O$
Hence, dioxides $C O_{2}, S i O_{2}, a n d G e O_{2} are acidic while S n O_{2} a n d P b O_{2} are amphoteric .$

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Similar questions

C O, C O_{2}, N a_{2} O, P b O_{2}, P b O, S n O, G e O_{2}, G e O

C O_{2}, S i O_{2}, S n O_{2}

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S_{1}

(B_{2} O_{3})

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