# What is the formula for caloric acid?

Apr 14, 2017

Well, CHLORIC acid is ${\text{HClO}}_{3}$. Caloric acid... doesn't exist.

It should be recognized that hypochlorous acid, chlorous acid, chloric acid, and perchloric acid are a family of chlorine-based oxoacids ($\text{HClO}$, ${\text{HClO}}_{2}$, ${\text{HClO}}_{3} ,$ ${\text{HClO}}_{4}$), whose acidity increases as the number of oxygens increases.

Each oxygen, more electronegative than the central chlorine atom, polarizes the electron density towards them, weakening the $\text{O"-"H}$ bond within the oxoacid, making it a stronger acid with the increasing number of oxygens.

It is generally considered that ${\text{HClO}}_{3}$ and ${\text{HClO}}_{4}$ are strong whereas $\text{HClO}$ and ${\text{HClO}}_{2}$ are weak.

Apr 14, 2017

Do you mean "carbonic acid".............?
Or do you mean "chloric acid"......?
$\text{Carbonic acid}$ is FORMALLY ${H}_{2} C {O}_{3}$, and is probably better represented by hydrated carbon dioxide, i.e. ${H}_{2} O \cdot C {O}_{2}$.
For $\text{chloric acid}$, $H C l {O}_{3}$, we have a $C l \left(+ V\right)$ oxidation state. $\text{Perchloric acid}$, $H C l {O}_{4}$, exhibits a $C l \left(+ V I I\right)$ oxidation state.