Question

How much salt should be dissolved in 150g of water so that concerntration of solution is 250g

Answer 1

mole fraction = 0.0122

C

molality =0.684

Mass fraction =

260

10

Mole fraction =

((10/58.5)+(250/18))

(10/58.5)

=0.0122

Molality =

58.5

10

×

250

1000

=0.684

Answer 2

Answer:

Text Solution

Solution

Concentration of solution = Mass of soluteMass of solution×100

Mass of common salt = 35 g

Mass of water = 300 g

Mass of solution = (300 + 25) = 335 g

Concentration of solution = (35g)(335g)×100=10.45%

Explanation: