Molality Calculation: Let's Find the Molality of the Resulting Urea Solution!

How can we calculate the molality of a resulting solution?

Given the data of mixing 1120 gm of 2 'm' urea solution with 2480 gm of 4 'm' urea solution, what steps should we take to determine the molality of the resulting solution?

Calculation of Molality

The molality of the resulting solution when 1120 gm of 2 'm' urea solution is mixed with 2480 gm of 4 'm' urea solution is 3.377 'm'. The calculation involved determining the total number of moles of urea in both solutions and the total mass of both solutions.

To calculate the molality of the resulting solution, it is essential to determine the total moles of urea in both the 2 'm' solution and the 4 'm' solution, as well as the total mass of the combined solutions.

Molality (m) is defined as the number of moles of solute per kilogram of solvent. The formula for molality is m = moles of solute/kg of solvent.

In the 2 'm' urea solution, there are 2 moles of urea per kilogram of solution. With 1120 gm of this solution, we can calculate the moles of urea present.

Similarly, in the 4 'm' urea solution, there are 4 moles of urea per kilogram of solution. By considering the mass of 2480 gm, we can determine the moles of urea.

Once we have calculated the total moles of urea in both solutions, we need to find the total mass of the resulting solution (in kilograms) by summing the masses of the individual solutions.

By applying the formula for molality, which is m = moles of solute/ kg of solvent, we can find the molality of the resulting urea solution when the two solutions are mixed.

Understanding the concept of molality and practicing such calculations can enhance our knowledge of solution chemistry and help us in various problem-solving scenarios.