PHYSICS HIGH SCHOOL

The vapor pressure of ethanol is 1.00 × 102 mmHg at 34.90°C. What is its vapor pressure at 60.61°C? (ΔHvap for ethanol is 39.3 kJ/mol.) mmHg

Answers

Answer 1

Answer:

Answer:

The vapor pressure of ethanol at 60.61 °C is 327.56 mmHg

Explanation:

using Clausius-Clapeyron equation

$ln((P_2)/(P_1)) = (\delta H)/(R)((1)/(T_1) -(1)/(T_2))$

where;

ΔH is the enthalpy of vaporization of ethanol = 39.3 kJ/mol

R is ideal gas constant = 8.314 J/mol.K

P₁ is the initial pressure of ethanol at T₁ = 1.00 × 10² mmHg

P₂ is the final pressure of ethanol at T₂ = ?

T₁ is the initial temperature = 34.9°C = 307.9 K

T₂ is the final temperature = 60.61°C = 333.61 K

$ln((P_2)/(P_1)) = (\delta H)/(R)((1)/(T_1) -(1)/(T_2)) \n\nln((P_2)/(100)) = (39300)/(8.314)((1)/(307.9) -(1)/(333.61))\n\nln((P_2)/(100)) = 4726.9666 (0.003248 -0.002997)\n\nln((P_2)/(100)) = 4726.9666 (0.000251) = 1.1865\n\n((P_2)/(100)) = e^((1.1865)) \n\n((P_2)/(100)) = 3.2756\n\nP_2 = (100*3.2756)mmHg\n\nP_2 = 327.56 mmHg$

Therefore, the vapor pressure of ethanol at 60.61 °C is 327.56 mmHg

Related Questions

_______________ involves removing the top layer of earth, mining the coal, and then replacing the earth back on the surface
_______ is the idea that people should be more interested in advancing their lives on earth than in worrying about getting to heaven
The ball was kicked in the air and it iss about to hit the . if horizonta componenet of its final velocity is 10m/s and vertical component of its final velocity is -10m/s .what is the magnotide of th final vellocity of the ball?
sticking your fingers into a wall socket will not bring you into direct contact with an electrical current. true or false
The energy released from the sun is the result of a nuclear fission reaction?

The correct notation for an alpha particle

Answers

Answer:

α or He⁴₂

Explanation:

*The computer does not allow for the 4 and 2 to be directly inline

The alpha particle can be notated as a simple "α". Since that symbol is the letter alpha in Greek. Another way of notating the particle is "He⁴₂" (where the 2 is directly under the 4), this is because an alpha particle contains the exact same components of a helium nucleus, two protons, and two neutrons (with an atomic mass of four).

Can't find the options on the keyboard so ill try to describe it. I think either an He symbol or the greek letter alpha is accepted. There must be a 4 at the top left and a 2 at bottom left.

AP PHYSICS please answer

Answers

I think it’s d not sure

If a 6-kg bowling ball is rolled down the bowling lane with a force of 12 N, what is the acceleration of the ball?

Answers

A= 2M/S squared should b ur answer

Which activity will create tension in the legs

Answers

running is one activity riding a bicycle too

Nonuniform positive acceleration

Answers

It means that acceleration changes with time.

A seismogram shows that P waves travela. at the same speed as surface waves.
b. more slowly than S waves.
c. at the same speed as S waves.
d. faster than S waves.

Answers

A seismogram shows that P waves travel faster than S waves. The answer is letter D. This is because P waves can push and pull the sound waves through a liquid or solid medium. The S wave can only move to the solid medium and solids have more compact molecules than the liquid so it travels slow.

Explanation:

Because P waves are the fastest seismic waves, they will ordinarily be the original 1 that your seismograph records. The following set of seismic waves on your seismogram will be the S waves. These are normally higher than the P waves. Often they are the only waves filmed a long distance from medium-sized earthquakes.

Other Questions

What do you call the molten material

How do you complete this mixed circuit?

Brownian motion cannot be detected in colloids. True or false?

An internal combustion engine uses fuel, of energy content 44.4 MJ/kg, at a rate of 5 kg/h. If the efficiency is 28%, determine the power output and the rate of heat rejection