# Does aqueous ammonium fluoride solution release hydrogen fluoride vapors?

Can $$\ce{HF}$$ vapors be released from $$\ce{NH4F}$$ solution in water $$(w(\ce{NH4F}) = 40\,\%)$$ at room temperature?

I assume that dissolving $$\ce{NH4F}$$ in water produces small amount of $$\ce{HF}.$$

• The question is not "Can ?" but "How much ?". There will be equilibrium F-(aq)<=>HF2-(aq)<=>HF(aq)<=>HF-(g) But as the solution would be slightly alkalic, I expect the partial HF(g) pressure as negligibly low. It would be higher for NH4HF2 or an acidized solution. – Poutnik Feb 23 at 13:08
• Also, it sublimes when heated to give ammonia and HF. The reaction is reversible. – Nilay Ghosh Feb 23 at 13:52