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For the reaction of CaCO3 with 6M HCl and with 6M CH3COOH.,
CaCO3 + 2HCl ---> CaCl2 + H2O + CO2
CaCO3 + CH3COOH ---> (CH3COO)2Ca + CO2 + H2O
For the reaction of Zn with 6M HCl and with 6M CH3COOH.,
Zn + 2HCl ---> ZnCl2 + H2
Zn + CH3COOH ---> (CH3COO)2Zn + H2
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