Question

sea water contains water and many other. soluble salts among which sodium chloride is maximum. If it is present by 3.75% (m/v), calculate the volume of sea water required to obtain 10kg of sodium chloride

Answer 1

QUESTION --- sea water contains water and many other. soluble salts among which sodium chloride is maximum. If it is present by 3.75% (m/v), calculate the volume of sea water required to obtain 10kg of sodium chloride

ANSWER
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If NaCl is present 3.75% (m/v),

It means 3.75 g is present in 100 ml

So, there is

37.5 g is there in 1 Litre

So for extracting, 10 kg NaCl we will need,

BY PROPORTIONALITY METHOD,

Let the amount of water required be x

37.5 : 1 :: 10000 : x

Product of extremes = Product of means

=> 37.5 x = 10000

=> x = 10000 / 37.5

=> x = 266.66

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ANSWER = 266.66 Litre
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