Question

If we add 68g sugar and 272 g water to 160 gram solution having concentration 20% find the final concentration of this solution

Answer 1

Answer:

the final concentration is again 20%

Answer 2

Final concentration of solution is 20%.

Given - Concentration of solution, added amount of sugar and water

Find - Final concentration of solution

Solution - Mass of solute in original concentration = $160 \times \frac{20}{100}$

Mass of solute = 32 gram

Mass of solvent = 160 - 32

Mass of solvent = 128 gram

New mass of solute = 32 + 68

New mass of solute = 100 gram

New mass of solvent = 128 + 272

New mass of solvent = 400 gram

Final concentration = mass of solute/mass of solution*100

New mass of solution = 100 + 400

New mass of solution = 500 gram

Final concentration = $\frac{100}{500} \times 100$

Final concentration = 20%

Hence, the final concentration of solution is 20%.

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