QVault Ochem Aldo Condensation + Acid Catalyzed decarboxylation Quesiton

[Not_A_Doc]

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So i'm getting frustrated with QVault. I keep finding questions with multiple correct answers IMO. Here's an example. Anyone want to help me understand why HCl is preferable to H2SO4?

*See screen shot*

 

[Not_A_Doc]

NVM... been studying for too long. Its a peroxide... not h2so4