NITRIC ACID NHO3

Nitric acid ( HNO3) , also known as aqua fortis and spirit of nitre, is a highly corrosive and toxic strong mineral acid which is normally colorless but tends to acquire a yellow cast due to the accumulation of oxides of nitrogen if long-stored. Ordinary nitric acid has a concentration of 68% .[ 2] When the solution contains more than 86% HNO3, it is referred to as fuming nitric acid. Depending on the amount of nitrogen dioxide present, fuming nitric acid is further characterized as white fuming nitric acid or red fuming nitric acid, at concentrations above 95% . Nitric acid is also commonly used as a strong oxidizing agent.