A solution is prepared by dissolving 25.1 g urea, (NH2)2CO, in 170.9 g water. Calculate the boiling point of the solution. Urea is a nonelectrolyte.

101.260 ° C

Explanation:

From the given information;

The molarity of lactose solution (m) can be calculated as:

m = 2.46 m

The molar elevation constant of water

Using the elevation in boiling point ;

i.e.

The boiling point of water solvent;

Elevation in boiling point;

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.