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How are SO_(2) Cl_(2).SO_(3) and SO_(2) obtained from sulphuric acid ? |
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Answer» Solution :`SO_(2)Cl_(2)` is formed from `H_(2)SO_(4)` by treating with excess of phosphorus pentachloride `H_(2)SO_(4) + 2PCl_(5) rarr SO_(2)Cl_(2) + 2HCL + 2POCl_(3)` `SO_(3)` is OBTAINED from sulphuric ACID by dehydration with phosphorus pentachloride `2H_(2)SO_(4) + P_(4)O_(10) rarr 4HPO_(3) + 2SO_(3)` `SO_(2)` is obtained from conc. `H_(2)SO_(4)`, when heated with copper METAL. `2H_(2)SO_(4) ("conc.") + CU rarr CUSO_(4) + 2H_(2)O + 2SO_(2)` |
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