# Wha tis the name of HBr (gas)?

$\text{Hydrogen bromide.....}$
$\text{Hydrogen bromide}$ has a boiling point of $- 66.8$ ""^@C. It is very soluble in water to give $\text{hydrobromic acid}$; and as with other gases, its solubility decreases with increasing temperature. The conc. $H B r \left(a q\right)$ that you use in the lab, i.e. $\text{hydrobromic acid}$, is approx. 48% by weight, and approx. $9 \cdot m o l \cdot {L}^{-} 1$.