What is the conjugate acid in the forward reaction?

H₃O⁺ is the conjugate acid of H₂O

Explanation:

In the Bronsted-Lowry Theory, the product side acid and base are the conjugates of the reactant side acid and base. (F⁻ is the conjugate base of HF).

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definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.