Hydrogen bromide, hydrobromic acid. Explanation: HBr in gas phase that is HBr(g) is called Hydrogen Bromide.Click to see full answer. Likewise, people ask, is HBr acid or base?HBr, or hydrobromic acid, is a strong acid. When placed in water, HBr completely dissociates into H+ and Br-.Additionally, what shape is HBr? Refractive index (nD) 1.325. Structure. Molecular shape. Linear. Hereof, what is the name of HBr as a binary compound? Co 2what is the name of the binary acid hbr.What Colour is HBr gas?Assuming we are talking about solution chemistry, the HBr it a colorless gas that dissolves in water to form hydrobromic acid which is also colorless. If the HBr is contaminated with bromine (Br2) then the solution would be brown to orange. HBr dissolved in organic solvents can also develop an orange to brown color.