write a chemical equation showing how each of the following species behaves as an acid when dissolved in water hc104

Hard to decipher. You must mean HClO4.

HClO4(l) + H2O(l) ==> H3O^+(aq) + ClO4^-(aq)
HClO4 acts as an acid forming the hydronium ion.

The chemical equation for the behavior of HClO4 (perchloric acid) as an acid when dissolved in water is:

HClO4 (aq) + H2O (l) ⟶ H3O+ (aq) + ClO4- (aq)

To write a chemical equation representing the behavior of a species as an acid when dissolved in water, we need to understand the concept of acid-base reactions. An acid is a substance that donates a proton (H+) when dissolved in water.

However, in the case of "hc104," which I'm assuming is meant to represent "HClO4" (perchloric acid), it is already an acid and dissociates completely in water. The chemical equation for the dissociation of perchloric acid in water is:

HClO4(aq) → H+(aq) + ClO4^-(aq)

In this equation, HClO4 dissociates into a hydrogen ion (H+) and a perchlorate ion (ClO4^-). When it comes into contact with water, it donates its hydrogen ion, which makes it behave as an acid.

Remember, the chemical equation describes the behavior of a substance in water; in this case, HClO4 dissociates into its respective ions.