What is the molality of a solution that has 4 mol of KCl in 0.800 kg of water?A.B.C.D.
Question
What is the molality of a solution that has 4 mol of KCl in 0.800 kg of water?
A. B. C. D.
Solution
Molality (m) is defined as the number of moles of solute per kilogram of solvent. It is expressed in moles/kg.
Given: Number of moles of KCl (solute) = 4 mol Mass of water (solvent) = 0.800 kg
We can use the formula for molality:
m = moles of solute / mass of solvent in kg
Substituting the given values into the formula, we get:
m = 4 mol / 0.800 kg = 5 mol/kg
So, the molality of the solution is 5 mol/kg.
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