Will vanadium liberate hydrogen in a reaction with acid?

Vanadium does not react with some acids, such as hydrochloric or cold sulfuric acid. But Vanadium dissolves in concentrated or hot sulfuric acid, nitric acid, hydrofluoric acid, and aqua regia. read more

Vanadium is slowly attacked by hydrofluoric acid and by hot, concentrated sulphuric acid. A specimen of vanadium which contained 8.66 per cent, of carbon and 1.6 per cent, of other impurities, when treated with concentrated sulphuric acid at 330° C., gave vanadium pentoxide, V2O5, with evolution of sulphur dioxide. read more

Reaction of vanadium with air Vanadium metal reacts with excess oxygen, O 2, upon heating to form vanadium(V) oxide, V 2 O 5. When prepared in this way, V 2 O 5 is sometimes contamined by other vanadium oxides. read more