Emssnylammeidn
Answered

IDNStudy.com, ang iyong pangunahing mapagkukunan para sa mga sagot ng eksperto. Hanapin ang impormasyon na kailangan mo nang mabilis at madali sa pamamagitan ng aming komprehensibo at eksaktong platform ng tanong at sagot.

Eugenol (C10H12O2) is known to be found in nutmeg, cinnamon, basil and

nutmeg. What is the boiling point of a solution containing 0.144 g of this

compound dissolved in 10.0 g of benzene? (Kb= 2.53 °C/m), Bpt(benzene)=

80.10 °C and Molar mass of C10H12O2= 164.2 g/mol ​

Sagot :

Given:

mass of solute = 0.144 g

mass of solvent = 10.0 g = 0.0100 kg

molar mass of solute = 164.2 g/mol

[tex]\text{BP}_{solvent} = \text{80.10°C}[/tex]

[tex]K_{\text{b}} = \text{2.53°C/molal}[/tex]

solute: eugenol

solvent: benzene

Required:

[tex]\text{BP}_{solution}[/tex]

Solution:

Step 1: Calculate the number of moles of solute.

[tex]\text{moles of solute} = \frac{\text{mass of solute}}{\text{molar mass of solute}}[/tex]

[tex]\text{moles of solute} = \frac{\text{0.144 g}}{\text{164.2 g/mol}}[/tex]

[tex]\text{moles of solute} = 8.76979 × 10^{-4} \: \text{mol}[/tex]

Step 2: Calculate the molality of solution.

[tex]m = \frac{\text{moles of solute}}{\text{mass of solvent}}[/tex]

[tex]m = \frac{8.76979 × 10^{-4} \: \text{mol}}{\text{0.0100 kg}}[/tex]

[tex]m = \text{0.0876979 molal}[/tex]

Step 3: Calculate the boiling point elevation.

[tex]\Delta T_{\text{b}} = mK_{\text{b}}[/tex]

[tex]\Delta T_{\text{b}} = (\text{0.0876979 molal})(\text{2.53°C/molal})[/tex]

[tex]\Delta T_{\text{b}} = \text{0.222°C}[/tex]

Step 4: Calculate the boiling point of the solution.

[tex]\text{BP}_{solution} = \text{BP}_{solvent} + \Delta T_{\text{b}}[/tex]

[tex]\text{BP}_{solution} = \text{80.10°C} + \text{0.222°C}[/tex]

[tex]\boxed{\text{BP}_{solution} = \text{80.322°C}}[/tex]

[tex]\\[/tex]

#CarryOnLearning

Ang iyong kontribusyon ay napakahalaga sa amin. Huwag kalimutang bumalik upang magtanong at matuto ng mga bagong bagay. Sama-sama tayong lumikha ng isang mas matibay na samahan. Bawat tanong ay may sagot sa IDNStudy.com. Salamat at sa muling pagkikita para sa mas maraming solusyon.