A) \[{{\text{O}}_{2}}\] is released
B) carbonic acid is formed
C) \[{{H}_{2}}{{O}_{2}}\] is formed
D) no reaction occurs
Correct Answer: C
Solution :
This is Merck's process of preparing hydrogen preroxide. When\[\text{C}{{\text{O}}_{2}}\] is passed through aqueous solution of \[\text{Ba}{{\text{O}}_{\text{2}}}\text{,}\,\text{BaC}{{\text{O}}_{\text{3}}}\]is precipitated and \[{{\text{H}}_{\text{2}}}{{\text{O}}_{\text{2}}}\]is formed. \[Ba{{O}_{2}}+C{{O}_{2}}+{{H}_{2}}O\xrightarrow{{}}BaC{{O}_{3}}\downarrow +{{H}_{2}}{{O}_{2}}\] \[{{\text{H}}_{\text{2}}}{{\text{O}}_{\text{2}}}\]can also be prepared by reaction of\[{{\text{H}}_{\text{2}}}\text{S}{{\text{O}}_{\text{4}}}\]with hydrated barium peroxide \[Ba{{O}_{2}}.8{{H}_{2}}O+{{H}_{2}}S{{O}_{4}}\xrightarrow{{}}BaS{{O}_{4}}\]\[+8{{H}_{2}}O+{{H}_{2}}{{O}_{2}}\]
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