Heavy Water(D2O) HYDROGEN Class 11 chemistry

what is hydrogen?

Hydrogen is the chemical element with the symbol H and atomic number 1. Hydrogen is the lightest element. At standard conditions hydrogen is a gas of diatomic molecules having the formula H₂. It is colorless, odorless, non-toxic, and highly combustible. 


class 11 chemistry hydrogen by arvind arora, hydrogen Class 11 chemistry.


use of Dihydrogen class 11.
Dihydrogen is used in the manufacture of vanaspati fat and in the manufacture of bulk organic chemicals like methanol. It is also used in the manufacture of hydrogen chloride and metal hydrides.


Dihydrogen as a fuel class 11.
Dihydrogen releases large quantities of heat on combustion. The energy released by combustion of fuels like dihydrogen, methane, LPG as compared in terms of the same amount in mole, mass and volume. On mass to mass basis, dihydrogen can release more energy than gasoline i.e. Octane number is about 3 times.


hydrogen as a fuel class 11.
Its combustion product being water, it is pollution free. It yields almost double the energy provided by jet fuels. For example, liquid hydrogen is used as a rocket fuel. This fuel has water as its product instead of harmful carbon dioxide, sulphur dioxide, hydrocarbons and other oxides of nitrogen.