Question

The normal boiling point of water is 100 c. use the Clasius-Clapeyron equation to determine the...

The normal boiling point of water is 100 c. use the Clasius-Clapeyron equation to determine the temperature (in °C) at which water will boil in the rocky mountains where atmospheric pressure is 0.657 atm. ΔHvap of water is 40.7 KJ/mole.

Science   Chemistry   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Use the Clasius-Clapeyeron equation.

ln (P1/P2) = -ΔH/R*(1/T1 – 1/T2)

where P1 = 1.000 atm; P2 = 0.657 atm, T1 = 100⁰C = (100 + 273) K = 373 K and ΔH = 40.7 kJ/mol = (40.7 kJ/mol)*(1000 J/1 kJ) = 40700 J/mol.

Plug in values

ln (1.000 atm/0.657 atm) = -(40700 J/mol)/(8.314 J/mol.K)*(1/373 – 1/T2) K-1

===> 0.42007 = (-4895.357229 K)*(0.00268096 – 1/T2) K-1

===> 0.42007/4895.357229 = -(0.00268096 – 1/T2)

===> 8.580987*10-5 = -0.00268096 + 1/T2

===> 1/T2 = 0.00276678987

===> T2 = 1/0.00276678987 = 361.429668 ≈ 361.43

The required temperature is 361.43 K = (361.43 – 273)⁰C = 88.43⁰C (ans).

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The heat of vaporization of water is 44.01 kJ/mole and the normal boiling point is 100...
The heat of vaporization of water is 44.01 kJ/mole and the normal boiling point is 100 °C. Calculate the atmospheric pressure in Denver where the boiling point of water is 97.10 °C. Be sure to enter a unit with your answer.
For water ∆H°vap = 40.7 kJ/mol at 100.°C, its boiling point. Calculate w and ∆E for...
For water ∆H°vap = 40.7 kJ/mol at 100.°C, its boiling point. Calculate w and ∆E for the vaporization of 1.00 mol water at 100.°C and 1.00 atm pressure.
The heat of vaporization of water at its normal boiling point is ΔHvap = 40.656 kJ/mol....
The heat of vaporization of water at its normal boiling point is ΔHvap = 40.656 kJ/mol. Estimate the vapor pressure of water at 25°C. Answer in atm.
What is the boiling point of water at 75 mmHg pressure? (The ΔHvap of water is...
What is the boiling point of water at 75 mmHg pressure? (The ΔHvap of water is 40.7 kJ/mol.) 39°C 62°C 86°C 44°C 72°C
Estimate the boiling point of water in Leadville, Colorado, elevation 3170 m. To do this, use...
Estimate the boiling point of water in Leadville, Colorado, elevation 3170 m. To do this, use the barometric formula relating pressure and altitude: P=P0×10−Mgh/(2.303RT) (where P = pressure in atm; P0 = 1 atm; g = acceleration due to gravity; molar mass of air, M= 0.02896 kg mol−1 ; R = 8.3145 J mol−1 K−1; and T is the Kelvin temperature). Assume the air temperature is 10.0 ∘C and that ΔHvap= 41 kJ mol−1 H2O.
Knowing that the enthalpy of vaporization for water is 40.7 kJ/mol and its normal boiling point...
Knowing that the enthalpy of vaporization for water is 40.7 kJ/mol and its normal boiling point is 100 oC, calculate Vapor pressure of water at 58°C. 456 torr 14.8 torr 144 torr 5.3 torr 759 torr
Propane has a normal boiling point of -42.0 ∘C and a heat of vaporization (ΔHvap) of...
Propane has a normal boiling point of -42.0 ∘C and a heat of vaporization (ΔHvap) of 19.04 kJ/mol. What is the vapor pressure of propane at 40.0 ∘C
Propane has a normal boiling point of -42.0 ∘C and a heat of vaporization (ΔHvap) of...
Propane has a normal boiling point of -42.0 ∘C and a heat of vaporization (ΔHvap) of 19.04 kJ/mol. What is the vapor pressure of propane at 40.0 ∘C?
the vapor pressure of SiCL4 is 100 mmHG at 5.4 C and the normal boiling point...
the vapor pressure of SiCL4 is 100 mmHG at 5.4 C and the normal boiling point is 57.65 C a. calculate Hvap (in kj/mol) for SiCL4. b. determine the vapor pressure (in mmHg) of SiCL4 at 30 C
The normal boiling point of ethanol is 78.3 ∘C, and the heat of vaporization is ΔHvap...
The normal boiling point of ethanol is 78.3 ∘C, and the heat of vaporization is ΔHvap = 38.6 kJ/mol. Part A What is the boiling point of ethanol in ∘C on top of Pikes Peak in Colorado, where P = 401 mmHg? Express your answer with the appropriate units.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT