What do you understand by the terms : (i) hydrogen economy, (ii) hydrogenation, (iii) syngas ,(iv)water-gas shift reaction ,(v) fuel-cell ?

What do you understand by the terms : (i) hydrogen economy, (ii) hydro

1.	What do you understand by the terms : (i) hydrogen economy, (ii) hydrogenation, (iii) syngas ,(iv)water-gas shift reaction ,(v) fuel-cell ?
Answer» Solution :(i) hydrogen - economy : The basic principle of hydrogen - economy is the transportation and storage of energy in the form of liquid or gaseous dihydrogen. (ii) hydrogenation : Hydrogenation of vegetable oils using nickel as catalyst gives edible fats (margarine and vanaspati ghee) (III) syngas : The mixture of CO and `H_2` is used for the synthesis of methanol and a number of hy drocarbons so it is called synthesis gas or syngas. (iv) water gas shift reaction : The production of dihydrogen can be increased by reacting carbon MONOXIDE of syngas mixture with STEAM in the presence of iron chromate as catalyst. `ubrace(CO_((g)) + H_2O_((g)))_("Water-gas")+ underset"Steam catalyst Fecro4"overset"673 K"to CO_(2(g))+ H_(2(g))` (v) fuel-cell : Fuel-cell is a device which converts, the energy PRODUCED during the combustion of a fuel directly into electrical energy Dihydrogen is used in Hydrogen-Oxygen fuel-cells for generating electrical energy. In this 70 - 85% combustion energy is converted into electrical energy.