Question

When sulphur reacts with conc. nitric acid, the product obtained are:
A. ${H_2}S{O_4}$
B. $S{O_2}$
C. $N{O_2}$
D. ${H_2}O$

Answer 1

Hint: Sulphur is a non-metal that is plentiful, tasteless, and odourless. Sulphur is a yellow crystalline solid in its natural state. It can be used as a pure element or as sulphide and sulphate minerals in nature. Sulphur is a chemical element with the atomic number 16 and the symbol S. It's nonmetallic, plentiful, and multivalent. Sulphur atoms form cyclic octatomic molecules with the chemical formula S₈ under normal conditions. At room temperature, element sulphur is a bright yellow crystalline solid.

Complete answer::
Nitric acid is a strongly corrosive mineral commonly known as aqua fortis and spirit of nitre. The pure compound is colourless, but decomposition into nitrogen oxides and water causes older samples to turn yellow. In water, the majority of commercially available nitric acid has a concentration of 68 percent.
Nitric acid is an oxidising acid that can convert sulphur to higher oxidation states (+4 or +6). Sulphur is oxidised to sulfuric acid depending on the temperature of the condensed nitric acid solution.
\[{\text{S}} + 6{\text{HN}}{{\text{O}}_3} \to {{\text{H}}_2}{\text{S}}{{\text{O}}_4} + 2{{\text{H}}_2}{\text{O}} + 6{\text{N}}{{\text{O}}_2}\]
Sulphuric acid, also known as oil of vitriol, is a mineral acid with the molecular formula H₂SO₄ that is made up of the elements sulphur, oxygen, and hydrogen. It is a colourless, odourless, viscous liquid that is miscible in all proportions of water.
Nitrogen Dioxide (\[N{O_2}\]) is a highly reactive gas that belongs to the group of gases known as nitrogen oxides ($N{O_x}$). Nitrous acid and nitric acid are two such nitrogen oxides. The indicator for the broader population of nitrogen oxides is \[N{O_2}\]. \[N{O_2}\] is mainly released into the atmosphere as a result of gasoline combustion.

Note:
An oxidising agent (oxidant, oxidizer), sometimes known as an oxidising agent (oxidiser), is a compound that has the potential to oxidise other compounds by accepting their electrons. Oxygen, hydrogen peroxide, and halogens are common oxidising agents.