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
Mashcka [7]
3 years ago
15

A solution is made by mixing 33.0 ml of ethanol, C2H6O and 67.0 ml of water. Assuming ideal behavior, what is the vapor pressure

of the solution at 20 degree C? Ethanol= .789 g/ml 43.9 torr. water= .998 g/ml 17.5 torr
Chemistry
1 answer:
ivann1987 [24]3 years ago
7 0
Grams ethanol = 33 ml times .789 gms/ml = 26.037 gms 

<span>Moles ethanol = 26.037 gms / 46 gms/mole = .57 moles </span>

<span>Moles water = 67 ml or 67 grams/18 gms/mole = 3.22 moles </span>

<span>total moles = .57 + 3.72 = 4.29 moles </span>

<span>Mole fraction ethanol = .57 moles ethanol / 4.29 moles total = 0.13</span>

<span>Moles fraction water = 3.72 moles water / 4.29 moles total = 0.87</span>

<span>Partial pressure of ethanol = mole fraction ethanol (.13) _ times VP ethanol 43.9 torr) = 5.707 torr </span>

<span>partial pressure water = mole fraction water .87) times VP water (l7.5 torr) = 15.23 torr </span>

<span>Total vapor pressure over solution = 5.71 torr + 15.23 torr = 20.94 torr</span>
You might be interested in
A clear, pure liquid sample is brought into the lab and exposed to an electrical current. Different gases are produced on each o
aleksklad [387]
It would be a compound.
4 0
3 years ago
What does C represent
zimovet [89]

Answer: the distance of energy from point d to e

8 0
3 years ago
Read 2 more answers
PLEASE HELP MEEE!!!!
Assoli18 [71]
It would be 35.8 Calories or calories. Not sure about that part. Hope this helps though.
3 0
3 years ago
How many “p” orbital in principal energy level below?​
marshall27 [118]

Answer:

Each principal energy level above the first contains one s orbital and three p orbitals. A set of three p orbitals, called the p sublevel, can hold a maximum of six electrons. Therefore, the second level can contain a maximum of eight electrons - that is, two in the s orbital and 6 in the three p orbitals.

Explanation:

5 0
3 years ago
In order to change a solid to a liquid or a liquid to a gas, what is needed?
AfilCa [17]
Latent heat, also called the heat of vaporization, is the amount of energy necessary to change a liquid to a vapour at constant temperature and pressure. The energy required to melt a solid to a liquid is called the heat of fusion
6 0
3 years ago
Other questions:
  • What reaction shows one element taking the place of another in a compound?
    14·1 answer
  • Define thermal conductor
    11·1 answer
  • Using the black numbers on the stopwatch to answer the questions.
    15·2 answers
  • Which of the following is not correctly paired with its dominant type of intermolecular forces? 1. SiH4, instantaneous dipoles 2
    9·1 answer
  • How many different sets of equivalent protons are there for para-xylene (1,4-dimethylbenzene)? only 1 two three four?
    13·1 answer
  • Na+CL2=2NACL is the balanced reaction for the formation of table salt. Given 20 grams of Na and 10 grams of Cl2, which reactant
    10·1 answer
  • The _ and _ are part of the digestive system. chose ONE from each of these list.
    6·2 answers
  • 6. What do we call Ethene that has been polymerised?​
    11·1 answer
  • PLEASE HELP.Which of these substances will dissolve in water?
    15·1 answer
  • Give the name and symbol or formula of a Group 5A(15) element or compound that fits each description or use:(c) Oxide used as a
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!