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Reaction of Metals with Acid

From - Na2O, ...

Question

From - $N a_{2} O, S O_{2}, S i O_{2}, A l_{2} O_{3}, M g O, C O,$ select an oxide which dissolves in water forming an acid.

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Solution

Among the given oxides $S O_{2}$ is an acidic oxide, which dissolves in water to form sulphurous acid $(H_{2} S O_{3})$ .

The balanced chemical equation is,

$S O_{2} + H_{2} O \to H_{2} S O_{3}$

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Q. Choose the most appropriate answer from

[S O_{2}, S i O_{2}, A I_{2} O_{3}, C O, M g O, N a_{2} O]

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[S O_{2}, S i O_{2}, A l_{2} O_{3}, M g O, C O, N a_{2} O]

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Reaction of Metals with Acid

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