A) 90% \[{{H}_{2}}S{{O}_{4}}\]
B) 98% \[{{H}_{2}}S{{O}_{4}}\]
C) 80% \[{{H}_{2}}S{{O}_{4}}\]
D) 20% \[{{H}_{2}}S{{O}_{7}}\]
Correct Answer: B
Solution :
The most efficient agent for the absorption of 303 is 98% H2SC>4 because it absorbs to form oleum. \[\underset{\left( 98% \right)}{\mathop{{{H}_{2}}S{{O}_{4}}}}\,+S{{O}_{3}}\xrightarrow{{}}\underset{oleum}{\mathop{{{H}_{2}}{{S}_{2}}{{O}_{7}}}}\,\]
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