MHT CET202525 Apr 2025Morning ShiftChemistryHydrogenActual
Which of the following is used in preparation of hydrogen peroxide by Merck process?
Options
- ACaCO _ 3( ~s )
- BBaO ₂ 8 H ₂ O
- CCaCl _ 2( ~s )
- DNa ₂ O _ 2( aq )
Correct answer
D. Na ₂ O _ 2( aq )
Step-by-step solution
The Merck process for the preparation of hydrogen peroxide employs hydrated barium peroxide reacting with dilute sulfuric acid. BaO ₂ 8 H ₂ O _ ( s ) + H ₂ SO _ 4( aq ) BaSO _ 4( s ) + H ₂ O _ 2( aq ) + 8 H ₂ O _ ( l ) Barium sulfate precipitates, isolating hydrogen peroxide in aqueous solution. Final answer: B