18. (a) What happens when sulphur dioxide is dissolved in water? Write a word equation of the reaction which takes place.
(b) What happens when an iron nail is placed in copper sulphate solution? Write word equation of the reaction involved.
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Answer : When sulphur dioxide is dissolved in water, then it forms sulphurous acid (H2SO3). Explanation: Metals react with oxygen to form metallic oxides. ... On the other hand, non-metals react with oxygen to form non-metallic oxides and these oxides differ from metallic oxides because they are acidic in nature.
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When sulphur dioxide is dissolved in water, then it forms sulphurous acid (H2SO3). Explanation: Metals react with oxygen to form metallic oxides. These metallic oxides are basic in nature because they react with water to form bases. ... Also, non-metallic oxides react with water to form acids.
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