Question

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➡ Calculate the mass of glucose and mass of water required to make 250 of 25% solution of glucose.


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Answer 1

mass percent =

mass of solute /mass of solution *100

25 =mass of solute /250 *100

mass of solute = 25x250/100 =62.5gm

water weight = solution -solute

250-62.5 =187.5gm

mass of water =187.5gm

glucose =62.5gm

Answer 2

☞ Calculate the mass of glucose and mass of water required to make 250 of 25% solution of glucose (C6H1206).

• Concentration of Glucose = 25%

=> $\dfrac{25}{100}$

% (Percentage means 100)

=> 0.25

• Mass percentage (%) = $\dfrac{Mass\:of\:solute}{Mass\:of\: solution}$ × 100

=> 25 = $\dfrac{Mass\:of\:solution}{250}$ × 100

=> Mass of solution = $\dfrac{25\:\times\:250}{100}$

=> Mass of solution = 62.5 g

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• Mass of water = Mass of solution - Mass of solvent..

Here..

Mass of solution = 250 g

and

Mass of solvent = 62.5 g

=> 250 - 62.5

=> 187.5 g

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Mass of water = 187.5 g

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