Question

800ml of solution contains 20 grams of solute. Calculate the
concentration in terms of mass by volume percentage of the solution.​

Answer 1

The concentration in terms of mass by volume percentage of the solution, if there is 20 gm of solute in 200 ml of solution, is 2.5 %.

Explanation:

The volume of the solution, V = 800 ml

Mass of the solute, m = 20 gm

The concentration in terms of mass per volume percentage of the solution is given as the mass of the solute in grams to the volume of the solution in milli-litres multiplied by 100 i.e.,

[Mass/Volume] % = [Mass of solute / Volume of the solution] * 100 …… (i)

Thus, by substituting the given values in eq. (i), we get

The mass by volume percentage of the solution is,

= [20/800] * 100

= [0.025] * 100

= 2.5%

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Answer 2

The  concentration in terms of mass by volume percentage of the solution is 2.5 %.

Explanation:

To calculate the mass by volume percent in a given compound, we use the formula:

$\text{Mass by volume percent }=\frac{\text{Mass of solute}}{\text{Volume of solution}}\times 100$

Mass of solute =20 g

Volume of solution = 800 ml

Putting values in above equation, we get:

$\text{Mass by volume percent }=\frac{20}{800}\times 100=2.5\%$

Hence, the mass by volume percent of solution is 2.5 %.

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