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प्रश्न
How will you prove that oxide formed by sulphur is acidic in nature?
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उत्तर
Sulphur dioxide gas turns moist blue litmus paper red, because it reacts with water to form sulphurous acid. Hence, it is acidic in nature.
SO2 + H2O → H2 SO3
Sulphur dioxide Water Sulphurous acid
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