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Which statement correctly relates two substances from this reaction?H₂CO₃ + H₂O → H₃O⁺ + HCO₃⁻A.HCO3- is the conjugate acid of H₂CO3.B.H₂O is the conjugate base of H₂CO3.C.H₂O+ is the conjugate acid of H₂O.D.H₂CO3 is the conjugate base of H30+

User Jose Areas
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Answer

Procedure

To determine the correct reaction we will need to recall the Brønsted-Lowry theory of acids and bases, which indicates that a Brønsted-Lowry acid is any species that can donate a proton, and a base is any species that can accept a proton. Additionally, a conjugate acid is the species formed after the base accepts a proton. By contrast, a conjugate base is the species formed after an acid donates its proton.

Based on this theory, for the reaction:

H₂CO₃ + H₂O → H₃O⁺ + HCO₃⁻

We will have that H₂CO₃ donate a proton hence acting as an acid and H₂O receives a proton, having the role of a base. Based on the previous, the conjugate base will be HCO₃⁻ and the conjugate acid H₃O⁺.

Therefore the correct answer is

User Asylniet
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