Question

What is the mass percent (m/m) concentration of a solution prepared from 500. g nacl and 2.50 kg of water?

Answer 1

Answer: The mass percent of NaCl solution is 16.66 %

Step-by-step explanation:

To calculate the mass percentage of NaCl solution, we use the equation:

`\text{Mass percent of NaCl solution}=\frac{\text{Mass of solute (NaCl)}}{\text{Mass of solution}}* 100`

Mass of solute (NaCl) = 500.0 g

Mass of solvent (water) = 2.50 kg = 2500 g (Conversion factor: 1 kg = 1000 g)

Mass of solution = Mass of solute + Mass of solvent = 500.0 + 2500 = 3000 g

Putting values in above equation, we get:

`\text{Mass percent of NaCl solution}=(500.0g)/(3000g)* 100\\\\\text{Mass percent of NaCl solution}=16.66\%`

Hence, the mass percent of NaCl solution is 16.66 %

Answer 2

The mas %(m/m) concentration of the solution is calculated using the below formula

mass of the solute/mass of the solvent x100

mass of the solute = 500g
mass of the solvent = 2.50kg in grams= 2.50 x1000 = 2500 g
%(M/M)= 500 g/2500g x100= 20% (m/M)