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Question
Give balanced chemical equations for the following:
Sulphur dioxide gas is passed through NaOH solution.
Chemical Equations/Structures
Very Short Answer
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Solution
Sulphur dioxide reacts with limited NaOH (1 : 1 molar ratio) to form sodium bisulphite.
\[\ce{SO2 + NaOH -> Na2SO3 + H2O}\]
Sulphur dioxide reacts with excess NaOH (2 : 1 molar ratio) to form sodium sulphite.
\[\ce{SO2 + 2NaOH -> Na2SO3 + H2O}\]
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Chapter 7: p-Block Elements - QUESTIONS FROM ISC EXAMINATION PAPERS [Page 460]
