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Surface Chemistry
What are emulsions? What are their different types? Give one example of each type.
Emulsions are the liquid−liquid colloidal systems, obtained on mixing two immiscible or partially miscible liquids.
There are two types of emulsions.
(1) Oil dispersed in the water type (O/W) : Here water is the dispersion medium, e.g. milk.
(2) Water dispersed in oil type (W/O) : Here oil is the dispersion medium, e.g. butter.
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In Haber's process, hydrogen is obtained by reacting methane with steam in presence of NiO as catalyst. The process is known as steam reforming. Why is it necessary to remove CO when ammonia is obtained by Haber’s process?
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