What is the molality when 0.75 mol is dissolved in 2.50 L of solvent?

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Answer 1 · 2014-06-10T11:39:16

To answer this question we will assume that the solvent is water. The mass of the solvent will be 2.50kg.

NOTE: The density of water is 1g = 1mL

#(2.50 L)/(1)#x#(1000 mL)/(1 L)#x#(1 g)/(1 mL)#x#(1 kg)/(1000g)#= 2.50 kg

To calculate the molality we use the relationship-

#(mol solute)/(kg solvent)# = molality

#(0.75 mol solute)/(2.50 kg solvent)# = 0.30#m#