The reaction rate of calcium carbonate with 0.1 M hydrochloric acid is significantly faster than with 0.1 M ethanoic acid due to the strength of the acids. Hydrochloric acid is a strong acid that fully dissociates in solution, providing a higher concentration of hydrogen ions (H+) that react with calcium carbonate. In contrast, ethanoic acid is a weak acid that only partially dissociates, resulting in fewer available H+ ions. This difference in dissociation leads to a slower reaction rate with ethanoic acid, as evidenced by the equilibrium pH and the common ion effect.
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