Question

a solution contains 50 g of common salt in 300g of water .calculate the concentration in terms of mass by mass percentage of the solution

Answer 1

Answer:

solute =50g

solvent=300g

amount of solute/amount of solvent x100

50/300x100=16%

Answer 2

For the given solution, the mass by mass percentage concentration will be 14.29%.

Given,

A solution contains:

50 g of common salt,

in 300 g of water.

To find,

Concentration in terms of mass by mass percentage.

Solution,

Firstly, for a solution, the mass by mass percentage concentration is given as

$Mass \hspace{3} percentage = \frac{Mass \hspace{3} of \hspace{3} solute}{Mass \hspace{3} of \hspace{3} solution} \times 100 \hfill ...(1)$

It is also denoted as w/w% or m/m%.

Here, we can see that, it is given,

mass of solute = 50 g,

total mass of solution = 50 + 300 = 350 g.

Hence, for the given solution,

$Mass \hspace{3} percentage = \frac{50}{350} \times 100$

$\implies Mass \hspace{3} percentage =0.1429 \times 100$

⇒ mass percentage = 14.29%.

Therefore, for the given solution, the mass by mass percentage concentration will be 14.29%.

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