4. When sulphur is made to react with oxygen it forms a substance 'X'. The substance 'X is then reacted with water which forms 'Y'. Write a word equation for the above mentioned reactions which take place. Identify 'X' and 'Y'.
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When sulphur reacts with oxygen, sulphur dioxide forms.
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The equations can be given as follows:
Explanation:
- Sulphur reacts with oxygen to form sulphur dioxide.
Sulphur+ oxygen→ sulphur dioxide
- Sulphur dioxide reacts with water to give Sulfurous acid
Sulphur dioxide +water → sulfurous acid
Hence, from the above equations we can conclude that the substance X will be sulphur dioxide and the substance Y will be sulfurous acid.
Sulphur dioxide is presently majorly in the acid rain whereas sulfurous acid is a weakly dibasic acid.
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