What is the boiling point of a solution containing 0.144 g of eugenol dissolved in 10.0 g of benzene

The boiling point of solution is 80.32°C

Explanation:

To calculate the molality of solution, we use the equation:

Where,

= Given mass of solute (eugenol) = 0.144 g

= Molar mass of solute (eugenol) = 164.2 g/mol

= Mass of solvent (benzene) = 10.0 g

Putting values in above equation, we get:

To calculate the elevation in boiling point, we use the equation:

where,

= elevation in boiling point =

Boiling point of pure solution (benzene) = 80.1°C

i = Vant hoff factor = 1 (For non-electrolytes)

= molal boiling point elevation constant = 2.53°C/m

m = molality of solute = 0.088 m

Putting values in above equation, we get:

Hence, the boiling point of solution is 80.32°C

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.