Question

0.2 kg of solute is mixed in 0.6 kg of solvent. Find the
concentration in terms of m/m %.​

Answer 1

The concentration of solute in terms of per cent by mass is 25%

Given,

Mass of solute = 0.2 kg

Mass of solvent = 0.6 kg

To Find,

The concentration of solute in terms of per cent by mass =?

Solution,

To find the concentration of the substance in terms of per cent by mass, we need to use the following formula :

Per cent by mass = mass of solute/ mass of solution x 100

Mass of solution is not given directly in the question. we can find it by following,

Mass of solution = mass of solute + mass of solvent

Per cent by mass = mass of solute/ mass of solute + mass of solvent x 100

= 0.2/ 0.2 + 0.6 x 100

= 25%

Therefore, the concentration of solute in terms of per cent by mass is 25%.

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Answer 2

Answer:

25%

Step-by-step explanation:

Given :- Mass of solute = 0.2 kg

             Mass of solvent = 0.6 kg

To Find :- The concentration of solute in terms of % by mass.

Solution :-

Here, we will use the below mentioned formula :

% by mass = ( mass of solute / mass of solution ) x 100

It is known that,

Mass of solution =  mass of ( solvent + solute )

Percent by mass = ( mass of solute ÷ ( mass of solute + mass of solvent ) ) x 100

                            = ( 0.2 ÷ ( 0.2 + 0.6 ) ) x 100

                             = (0.2 ÷ 0.8) × 100

                             = 1/4 × 100

                             = 25%

Therefore, the concentration of solute is 25%.

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