A) \[{{H}_{2}}S{{O}_{4}}+S{{O}_{3}}\]
B) \[{{H}_{2}}S{{O}_{4}}+S{{O}_{2}}\]
C) \[{{H}_{2}}S{{O}_{4}}\]
D) \[{{H}_{2}}S{{O}_{4}}+S{{O}_{4}}\]
Correct Answer: A
Solution :
Key Idea: Oleum is fuming sulphuric acid. \[{{H}_{2}}S{{O}_{4}}+S{{O}_{3}}\xrightarrow{{}}\underset{\text{pyrosulphuric}\,\text{acid}}{\mathop{\underset{\text{oleum}\,\text{or}}{\mathop{{{H}_{2}}{{S}_{2}}{{O}_{7}}}}\,}}\,\]
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