Environmental Chemistry Part II: Water Flashcards
water covers ____ of earth’s crust?
fresh water is only _____.
71%
3%
why is sea water not fit for drinking?
large amount of salts
importance of water in body and household?
importance of water in industry and agriculture.
4
basic properties of water?
2
explain the peculiar behavior of water & its importance?
why is water an excellent cooler in industries?
water has _____ heat of vaporization. meaning? importance?
how can u split water?
at which electrode H and O is produced? reaction? ratio?
the ability of water to dissolve a wide variety of substances is due to?
why is natural water like rainwater and ground water no pure water?
its 2 properties
what is soft and hard water?
rainwater dissolve CO2? what happens after that? write reactions? some rocks may contain?
list subtances that causes hardness of water?
hard water is divided into? explain? what is it caused by?
how does hard water hamper cleansing action? solution to it?
methods to remove temporary hardness?
discuss the 1st method & write the reaction?
clark’s method
methods to remove permanent hardness? explain the first method?
ion exchange resins?
solve self assessment exercise 15.4
what causes contamination in water bodies?
describe household wastes as pollutants? write names of 6 household wastes?
describe industrial wastes as pollutants?
raw water treatment
4
