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
nataly862011 [7]
2 years ago
13

The vapor pressure of Substance X is measured at several temperatures:temperature (C) vapor pressure (atm)34 0.23644 0.29254 0.3

55Use this information to calculate the enthalpy of vaporization of X. Round your answer to 2 significant digits. Be sure your answer contains a correct unit symbol. Clears your work. Undoes your last action. Provides information about entering answers.
Chemistry
1 answer:
shusha [124]2 years ago
6 0

Answer:

ΔHv = 17.04 KJ/mol

Explanation:

T(°C)   T(K)      Pv(atm)         1/T(K)                LnPv

34      307      0.236       0.00325733      - 1.4439

44      317       0.292       0.0031545         - 1.2310

54      327      0.355       0.003058          - 1.0356

Clausius-Clapeyron:

  • δLnP/δT = ΔH/RT²

⇒ δLnP = ΔH/R (δT/T²)

∴ δT/T² = δ/δT(- 1/T )

⇒ δLnP/δT = - ΔH/R

Graphing: LnP vs 1/T

we get an ecuation that corresponds to a straight line:

y = - 2049.6x + 5.2331 ...... R² = 1

where the slope of this line is:

y = mx + b

⇒ m = - 2049.6 = - ΔH/R.....Clausius-Clapeyron

⇒ ΔH = (2049.6)(R)

∴ R = 8.314 E-3 KJ/mol.K

⇒ ΔHv = 17.04 KJ/mol

You might be interested in
Why is biodiversity very important?
ankoles [38]

Answer: Biodiversity is important to humans for many reasons. ... Ecological life support— biodiversity provides functioning ecosystems that supply oxygen, clean air and water, pollination of plants, pest control, wastewater treatment and many ecosystem services.

Explanation:

6 0
2 years ago
Read 2 more answers
TIME REMAINING
jek_recluse [69]

Answer:

Liquid

Explanation:

had this ln a test and got it right

6 0
2 years ago
Why does water flow decrease in your shower when someone flushes the toilet ​
Rashid [163]

Answer:

A toilet requires a large amount of cold water to flush. So, when the toilet flushes while you're in the shower, it's stealing from your shower's cold water supply. When the pressure-balancing valve senses the drop in cold water pressure, it responds by restricting the hot water pressure.

6 0
3 years ago
Read 2 more answers
50 POINTS: PLEASE ANSWER AS QUICK AS POSSIBLE!
Dvinal [7]

Explanation:

The lack of a control group

6 0
3 years ago
Read 2 more answers
Find the number of moles in 3.62 x 1024 atoms of helium.
Makovka662 [10]
3.62x10^24/ 6.02x10^23=  6.013 moles to 3dp
8 0
3 years ago
Read 2 more answers
Other questions:
  • Please help me!!!!!!
    11·2 answers
  • Calculate the mass (in kg) of water produced from the combustion of 1.0 gallon (3.8 L) of gasoline (C8H18). The density of gasol
    11·2 answers
  • Which environmental changes occur fastest? oil spill changing seasons global warming pond succession Previous hurry plzz
    5·1 answer
  • How do isotopes of a givin element similar
    5·2 answers
  • A student mixes some water at room temperature with a white powder also at room temperature. The white powder disappears into th
    13·1 answer
  • Help Anyone! What would be the correct answer to this question?
    12·1 answer
  • When a drawing of a circle made in the center of a piece of paper with a black marker gets wet, the marker bleeds, and as the wa
    5·2 answers
  • How many moles of Mg(OH)2 will react with 2.5 mol HCI?
    10·1 answer
  • Which two features are used to describe matter?<br> om
    10·1 answer
  • Indicate the oxidation state for each of the following:
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!