# What is the empirical formula for the product that is formed when K and Cl_2 combine?

Aug 20, 2016

$K C l$

#### Explanation:

When potassium solid ($K$) is mixed with chlorine gas ($C {l}_{2}$) the reaction is the following:

$2 K \left(s\right) + C {l}_{2} \left(g\right) \to 2 K C l \left(s\right)$

The empirical formula, which is the same as the formula unit would be: $K C l$.

Note that ionic compounds are always written as their empirical formula.