# What is the chemical equation for the formation of HF from the single, isolated H and F atoms?

Jun 19, 2018

The formation of $\text{HF}$ from single, isolated $\text{H}$ and $\text{F}$ atoms can be explained using standard enthalpy change of formation.

#### Explanation:

Under standard conditions, hydrogen and fluorine exist in diatomic gaseous state, ${\text{H}}_{2}$ and ${\text{F}}_{2}$ respectively.

By forming an equation, we can see the formation of $\text{HF}$.

$\text{H"_2+"F"_2 -> "HF}$

Now, all we need to do is balance the equation.

$\frac{1}{2} \text{H"_2 + 1/2 "F"_2 -> "HF}$

OR

$\text{H"_2 + "F"_2 -> 2"HF}$