Chemistry, asked by LuciferX7921, 1 year ago

Calculate molarity molality and mole fraction of ki if density of 20%mass/mass aqueouski is 1.202g/ml

Answers

Answered by fortnitefriend2006
6

Answer:Mass % is given so that take total mass = 100 g

Mass of KI = 20 % of 100 = 20 g

Mass of water = total – mass of KI = 100 – 20 = 80 g of water

Mass of solvent (water) in kg = 80 /1000 = 0.08 Kg

Molar mass of KI = 39 + 127 = 166 g mol−1

Use the formula

Number of moles of KI = 20 / 166 = 0.1205 mol

Use the formula

Molality of KI = 0.1205 / 0.08 = 1.51 m

Explanation:

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