Enter a chemical equation for HClO4(aq) showing how it is an acid or a base according to the Arrhenius definition. Consider that strong acids and bases dissociate completely.

HClO₄(l)  → H⁺ (aq) + ClO₄⁻ (aq)

Explanation:

Arrhenius definition states that a compound is an acid when, in aqueous solution it can releases protons.

Therefore a compound is a base when, in aqueous solutions it can releases hydroxides anions.

For example:

Nitric acid → HNO₃

It is an Arrhenius acid, because it can release a H⁺, according to this equation:  HNO₃ →  H⁺  +  NO₃⁻

HClO₄ → Perchloric acid

HClO₄(l)  → H⁺ (aq) + ClO₄⁻ (aq)

Perchloric acid releases a proton when it is immersed in an aqueous solution. And it also produces perchlorate anion.

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explanation:

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.