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
tino4ka555 [31]
3 years ago
10

A solution of methanol and water has a mole fraction of water of 0.312 and a total vapor pressure of 211 torr at 39.9∘C. The vap

or pressures of pure methanol and pure water at this temperature are 256 torr and 55.3 torr, respectively.Is the solution Ideal?
Chemistry
1 answer:
DaniilM [7]3 years ago
3 0

Answer : This is not an ideal mixture.

Explanation :

Using Raoult's law :

P_{Mixture}=p_{CH_3OH}+p_{H_2O}\\\\P_{Mixture}=x_{CH_3OH}\times p^o_{CH_3OH}+x_{H_2O}\times p^o_{H_2O}

where,

P_{Mixture} = total vapor pressure of mixture

p^o_{CH_3OH} = vapor pressure of pure methanol = 256 torr

p^o_{H_2O} = vapor pressure of pure water = 55.3 torr

x_{H_2O} = mole fraction of water = 0.312  

x_{CH_3OH} = mole fraction of methanol = 1 - 0.312 = 0.688

Now put all the given values in the above formula, we get:

P_{Mixture}=x_{CH_3OH}\times p^o_{CH_3OH}+x_{H_2O}\times p^o_{H_2O}

P_{Mixture}=0.688\times 256torr+0.312\times 55.3torr

P_{Mixture}=193.4torr

From this we conclude that the total vapor pressure of mixture is less than the total given vapor pressure of 211 torr. That means, the interactions between the methanol and water would be weaker than those between the individual substances. So, this is not an ideal mixture.

Hence, this is not an ideal mixture.

You might be interested in
Which of the following compounds will undergo an Sn2 reaction most readily?
Bad White [126]

Answer:

nekwkz8 waxed

Explanation:

snswko1u219ux8w ok qqm see

4 0
3 years ago
How do we measure the mass of an extrasolar planet?
Degger [83]
To determine a planet's mass, astronomers typically measure the minuscule movement of the star caused by the gravitational tug of an orbiting planet. For planets the massof Earth detecting such a tiny tug is extraordinarily challenging with current technology
4 0
3 years ago
A student reduces the temperature of a 300 cm3 balloon from 60°c to 30°
FromTheMoon [43]

We can use the ideal gas equation which is expressed as PV = nRT. At a constant pressure and number of moles of the gas the ratio T/V is equal to some constant. At another set of condition of temperature, the constant is still the same. Calculations are as follows:

T1 / V1 = T2 / V2

V2 = T2 x V1 / T1

V2 = 303.15  x 300 / 333.15

<span>V2 = 272.99 cm³</span>

7 0
3 years ago
Which of these elements is the most chemically reactive?
Angelina_Jolie [31]

Answer:

a zinc is the most reactive

3 0
2 years ago
Chemical formular of ammonium tetraoxosulphate 4<br>​
earnstyle [38]

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

(NH4)2 SO4

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

4 0
3 years ago
Other questions:
  • Select the two elements isolated by the Curies.
    15·2 answers
  • In your bathroom you leave the faucet dripping. If the faucet leaks 30.0 drops/minute, how much water will you waste after 3.00
    8·1 answer
  • Arrange the following types of photons of electromagnetic radiation in order of decreasing energy: red light, radio, x-rays, γ-r
    11·1 answer
  • when a species must survive changes in the environment, would they want to use sexual or asexual reproduction. Explain
    8·1 answer
  • Suppose a computer manufacturer can build circuit boards according to the following process:12 resistors + 20 insulators + 8 mem
    6·1 answer
  • Uestion 3 (1 point)
    9·2 answers
  • How many miles of glucose are in 19.1 g of glucose
    6·1 answer
  • Why do you think they stilk proruxe bright flowers to attract bees?
    13·2 answers
  • What do cubic measurements, live cm3, mesure?"<br> O length<br> volume
    6·1 answer
  • Someone pls help me I will make you brain
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!