Nitric Acid

Lesson 4 of 7 • 1 upvotes • 9:13mins

Deepak James

Nitric acid (HN03) Nitrogen forms oxoacids such as H2N2O2,HNO2, HNO3 Preparation In laboratory NaNo3+H2SO4-----> 4NO+6H2 large scale production 4NH3+5O2-------> 4NO+6H20 Conditions 500k temperature, 9 bar pressure, pt/ Rg gauge catalyst 2NO+O2-----> 2NO2 3NO2+H2O---->2HNO3+NO Properties Colourless liquid, planar shape, In aqueous solution nitric acid behaves as a strong acid Con.HNO3-- strong oxidising agent and attacks most element except noble gas elements such as gold and platinum. Some metals do not dissolve in con. HNO3 because the formation of a passive film of oxide on the surface Uses: picking of stainless steel, etching of metals and oxidiser in rocket fuel