Advantages and Disadvantages of Evaporation:

The main disadvantages of evaporation are high capital, energy and maintenance costs; large size of apparatus; enhanced temperatures; corrosion problems; and scaling or foaming.

Evaporation process benefits for foods and beverages. ... Beverage producers use evaporation processing to create concentrates (such as juice concentrates). Dairy producers use it to dry whey or lactose into powders, which can then be used in new products like infant formula or protein shakes.

  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-

in the analysis of systems that involve fluid flow, we frequently encounter the combination of properties u and pv.