Question

A solution is made by dissolving 42.3g of potassium hydroxide in 329g of water what is the molality of the solution?

Answer 1

2.34 molality

Step-by-step explanation:

Mole weight of KOH ( using periodic table ...rounded to 3 s.f.) =

56.1 gm/mole

Number of moles in 43.2 g

43.2 g / 56.1 gm / mole =.770 mole

molality = .770 mole / .329 kg = 2.34 m