Question

A 6.90 m solution of koh in water contains 30 by mass of koh calculate the density of koh solution

Answer 1

Density=mass/volume

=6.90/30

=0.23

Answer 2

Answer:

Density = 1.28 g/ml

Explanation:

Mass of KoH = 30 g

m = moles * 100 / volume

= wb*1000/mb*volume

6.90=30*1000/56*v

v=30*1000/56*6.90

v=81.43 ml

therfore ,

DENSITY = M/V

= 100/81.43

1.28 G/ ML