A) Oxygen reacts with dilute sulphuric acid
B) Hydrolysis of dilute \[{{H}_{2}}S{{O}_{4}}\]
C) Concentrated \[{{H}_{2}}S{{O}_{4}}\] reacts with \[N{{a}_{2}}S{{O}_{3}}\]
D) All of these
Correct Answer: B
Solution :
\[\underset{(S)}{\mathop{N{{a}_{2}}S{{O}_{3}}}}\,+\underset{(aq)}{\mathop{{{H}_{2}}S{{O}_{4}}}}\,\,\to \,\underset{(aq)}{\mathop{N{{a}_{2}}S{{O}_{4}}}}\,+\underset{(l)}{\mathop{{{H}_{2}}O}}\,+\underset{(g)}{\mathop{S{{O}_{2}}}}\,\]
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