Question

Example 2.1 A solution contains 40 g of
common salt in 320 g of water.
Calculate the concentration in terms of
mass by mass percentage of the
solution.​

Answer 1

Mas of common salt (solute)=40 g

Mass of water (soluted) =320 g

mass of solution=320+4=360 g

concentration of solution= Mmass of solutute/ mass of solution×100

= 40/360×100=11.11%

Hence, the concentration of the solution is 11.11%

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Answer 2

ANSWER=

Mass of solute - NaCl =40gm

Mass of solvent - water =320gm

Mass of solution =(40+320) gm

=360gm

Concentration in terms of Mass by mass percentage =mass of solute /mass of solution *100

=40/360*100%=11.11%

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