The difference between concentrated sulfuric acid and fuming sulfuric acid

1, the meaning is different:

Fuming sulfuric acid

Fuming sulfuric acid, that is, sulfuric acid solution of sulfur trioxide. Colorless to light brown viscous fuming liquid, its density, melting point and boiling point vary with SO3 content. When it is exposed to the air, the volatilized SO3 and the water vapor in the air form fine dew drops of sulfuric acid and smoke, so it is called fuming sulfuric acid.

Concentrated sulfuric acid, commonly known as bad water, has a chemical molecular formula of H2SO4 and is a highly corrosive strong mineral acid. Concentrated sulfuric acid refers to a sulfuric acid solution having a mass fraction greater than or equal to 70%.

2. Different strengths:

Corrosion of organic matter is stronger than sulphuric acid; sulfuric acid with a low corrosion concentration of metal is stronger.