1.0 mol of Cu(NO3)2 is dissolved in 1000 g of water. What is the molality of...

1.0 mol of Cu(NO3)2 is dissolved in 1000 g of water. What is the molality of the solution for use in colligative property equations? The answers are 1, 2, 3, 4, or cannot be determined.

Expert Solution

Given number of moles of Cu(NO₃)₂ = 1.0 mol

Mass of water = 1000 g = 1 kg Since 1 kg = 1000 g

We know that molality , m = number of moles of solute / Mass of solvent in Kg

= number of moles of Cu(NO₃)₂ / Mass of water in kg

= 1.0 mol / 1 kg

= 1 m

Therefore the molailty of the solution is 1 m

queen_honey_blossom answered 1 year ago

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