1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lys-0071 [83]
3 years ago
14

What is the mole fraction of each component if 3.9 g of benzene (C6H6) is dissolved in 4.6 g of toluene (C7H8)

Chemistry
2 answers:
Savatey [412]3 years ago
4 0

Answer:

Step 1 of 6

(a)

The mass of benzene is  , so calculate the moles of benzene as follows:



The mass of toluene is, so calculate the moles of toluene as follows:



Now, calculate the mole fraction as follows:





Therefore, the mole fraction of benzene and toluene is  and  respectively.

Step 2 of 6

(b)

The formula to calculate the partial pressure is as follows:



Here,  is the partial pressure of benzene,  is the vapour pressure of pure benzene and  is the mole fraction of benzene.

Vapour pressure of pure benzene at  is.

Substitute the values in the equation as follows:



Therefore, the partial pressure is  .

Step 3 of 6

(c)

Vapor pressure of the solution at 1 atm is  .

When the total pressure of the vapour pressure of the mixture is  at a temperature, then, the solution boils. It corresponds to the boiling point of the solution.

Calculate the total pressure of the solution at  as follows:



Since, the total pressure is less than the atmospheric pressure, the solution will not boil at  .

Calculate the total pressure of the solution at  as follows:



Since, the total pressure is greater than the atmospheric pressure, the solution will boil at  .

Therefore, the boiling point of the solution is  .

Step 4 of 6

(d)

Mole fraction of benzene at  is calculated as follows:



Mole fraction of toluene at  is calculated as follows:



Therefore, the mole fractions of benzene and toluene are  and  respectively.

Step 5 of 6

(e)

Vapor pressure of benzene at  is  .

Partial pressure of benzene is calculated as follows:



Vapor pressure of toluene at  is  .

Partial pressure of toluene is calculated as follows:



Step 6 of 6

Weight composition of the vapour that is in equilibrium with the solution is calculated as follows:



Weight composition of the vapour that is in equilibrium with the solution is calculated as follows:



Explanation:

mark me as brainliest

forsale [732]3 years ago
3 0
Total mol = (3.9 g * 1 mol C6H6 / 78.11 g = 0.0499 mol) + (4.6 g * 1 mol C7H8 / 92.14 = 0.0499 mol) =0.0798 mol.
Mole fraction benzene = 0.0499 / 0.0798 = 0.5.
Mole fraction toluene = 0.0499 / 0.0798 = 0.5
You might be interested in
What is the wavelength of radiation with a frequency of 3.68 X 10^12 /s?
konstantin123 [22]

Answer:

The wavelength of radiation = 8.2 x 10⁻⁵

Explanation:

by the formula

v x λ = C

v = frequency  

λ = wavelength

C = speed of light (3 x 10⁸ m/s)

λ = C / v

λ = 3 x 10⁸ / 3.68 x 10^{12}

λ = 8.2 x 10⁻⁵

6 0
3 years ago
When 8.5 g of methane (ch4) is burned in a bomb calorimeter (heat capacity = 2.677 × 103 j/°c), the temperature rises from 24.00
Scrat [10]
The molar mass of methane is 16 g/mol. The heat absorbed by the calorimeter is the sensible heat, which is the heat gained or lost during a temperature change.

Sensible heat = CΔT = (<span>2.677 kJ/°C)(27.08 - 24</span>°C)
<em>Sensible heat = 8.24 kJ</em>
8 0
3 years ago
Read 2 more answers
Defferent between crysttiline solid and amerphus solid​
Alexxx [7]

Answer:

Crystalline solids have well-defined edges and faces, diffract x-rays, and tend to have sharp melting points. In contrast, amorphous solids have irregular or curved surfaces, do not give well-resolved x-ray diffraction patterns, and melt over a wide range of temperatures.

Explanation:

Hope this helped!

5 0
3 years ago
Read 2 more answers
How do unicellular and multicellular organisms differ in structure and function?
meriva
Unicellular had one cell and multicellular has more than one
5 0
3 years ago
Which would have the LEAST gravitational potential energy (GPE)? A ball sitting on the ground An airplane flying 30,000 feet abo
ryzh [129]

Answer:

(A) A ball sitting on the ground

Explanation:

8 0
3 years ago
Other questions:
  • Use Coulomb's Law to calculate the energy of a copper ion and an oxide ion at their equilibrium ion-pair separation distance.
    10·1 answer
  • What salt is produced in hn o 3 (aq) koh(aq)→ h 2 o(l) ?
    11·1 answer
  • Describe the general characteristics of metals.
    12·1 answer
  • What is the density, in g/mL, of a cube of lead (Pb) that weighs 0.371 kg and has a volume of 2.00 in.3
    8·1 answer
  • A computer monitor uses 200 W of power. How much energy does it use in<br> 10 seconds?
    6·1 answer
  • What is a wet celled battery composed of? Give an example of a wet celled battery.
    6·1 answer
  • Predict how the surface of a sand dune would change if a river began flowing through the area over the course of 10,000 years. W
    10·1 answer
  • En 200 gramos de carburo de potasio ,cuya fórmula química es K4C , Cuántos moles de esa sustancia existen ?
    9·1 answer
  • a man with mass 60kg climbs up staircase having 30 step each of 10cm height in 10seconds.Calculate his power.​
    9·1 answer
  • Describe the three possible decisions you can receive from an
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!