Chemistry
Answer
The four uses of hydrogen are:
- The oxy-hydrogen flame obtained by burning hydrogen and oxygen together has a very high temperature of about 2800°C - 3000°C. Hence it is used for cutting and welding of metals.
- It is used as a fuel as hydrogen has high heat of combustion.
- It is used for hydrogenation of vegetable oil.
- It is used as a reducing agent in extraction of metals.
Related Questions
Hydrogen is a good reducing agent. What do you understand by the above statement? Explain with the help of copper oxide as an example.
(a) Name a process by which hydrogen gas is manufactured.
(b) Give equations for the reactions.
(c) How is hydrogen separated from carbon dioxide and carbon monoxide?
Define:
(a) catalytic hydrogenation
(b) oxidation
(c) reduction
(d) redox reaction
Equal volumes of hydrogen and chlorine are exposed to diffused sunlight to prepare
- hydrogen chloride
- water
- sodium hydroxide
- hydrochloric acid