Answered Essay: Clausius Clapeyron Equations: ln P = Delta H_vap/R (1/T) + c or ln P_z/P_s = – Delta

Can someone help me answer this question!
In P. RmEG)+c or In P.-me(r, ) Clausius Clapeyron Equations: a) 7) will give a linear line Based on the Claussius-Clapeyron equation, a plot of with the slope of the line equal to vs. A plot of data for a substance gives a slope of -1876 K1. What is the enthalpy of cvaporization of the substance b) The same substance form part b has a vapor pressure of 50.0 mmHg at 25.0 °C. What is its normal boiling point? c)

Clausius Clapeyron Equations: ln P = Delta H_vap/R (1/T) + c or ln P_z/P_s = – Delta H_vap/R (1/T_2 – 1/T_1) a) Based on the Claussius-Clapeyron equation, a plot of _____ vs. _____ will give a linear line with the slope of the line equal to _____ b) A plot of data for a substance gives a slope of -1876 K^-1. What is the enthalpy of vaporization of the substance. c) The same substance form part b has a vapor pressure of 50.0 mmHg at 25.0 degree C. What is its normal boiling point?

Expert Answer

Answer

a)

Clearly, there is a slope:

-HRvap/R = slope

if we assume “X-axis” to be 1/T

and get the y-axis to be ln(P)

then, there will be a striahgt line

so

a plot of ln(P) vs 1/T should give a STRAIGHT LINE

b)

If

slope = -Hvap /R

and R = 8.314 J/molK ( idea gas constant )

then

HVap = -slope*R = -(-1876)*8.314 = 15597.064 J/mol

Hvap = 15.597 kJ/mol

c)

if

P = 50 mm Hg, T = 25°C = 298 KK

then get Pnomral; i.e. 1 atm 760 mm Hg; T2 = ?

Recall that in equilibrium; especially in vapor-liquid equilibriums, we can use Clasius Clapyeron combination equation in order to relate two points in the same equilibrium line.

The equation is given as:

ln(P2/P1) = -dHvap/R*(1/T2-1/T1)

Where

P2,P1 = vapor pressure at point 1 and 2

dH = Enthalpy of vaporization, typically reported in kJ/mol, but we need to use J/mol

R = 8.314 J/mol K

T1,T2 = Saturation temperature at point 1 and 2

Therefore, we need at least 4 variables in order to solve this.

Substitute all known data:

ln(P2/P1) = -dHvap/R*(1/T2-1/T1)

Change negative signs

ln(P2/P1) = dHvap/R*(1/T1-1/T2)

ln(760/50) = 15597.064 /8.314*(1/298-1/T2)

Get T2 ( in K)

ln(760/50)*8.314/15597.064 – 1/298 = -1/T2

T2 = -(-0.001905)^-1

T2 = 524.934 K

T2 = 524.934-273 C

T2 = 251.9 °C, which is normal BP

Buy Essay
Calculate your paper price
Pages (550 words)
Approximate price: -

Help Me Write My Essay - Reasons:

Best Online Essay Writing Service

We strive to give our customers the best online essay writing experience. We Make sure essays are submitted on time and all the instructions are followed.

Our Writers are Experienced and Professional

Our essay writing service is founded on professional writers who are on stand by to help you any time.

Free Revision Fo all Essays

Sometimes you may require our writers to add on a point to make your essay as customised as possible, we will give you unlimited times to do this. And we will do it for free.

Timely Essay(s)

We understand the frustrations that comes with late essays and our writers are extra careful to not violate this term. Our support team is always engauging our writers to help you have your essay ahead of time.

Customised Essays &100% Confidential

Our Online writing Service has zero torelance for plagiarised papers. We have plagiarism checking tool that generate plagiarism reports just to make sure you are satisfied.

24/7 Customer Support

Our agents are ready to help you around the clock. Please feel free to reach out and enquire about anything.

Try it now!

Calculate the price of your order

Total price:
$0.00

How it works?

Follow these simple steps to get your paper done

Place your order

Fill in the order form and provide all details of your assignment.

Proceed with the payment

Choose the payment system that suits you most.

Receive the final file

Once your paper is ready, we will email it to you.

HOW OUR ONLINE ESSAY WRITING SERVICE WORKS

Let us write that nagging essay.

STEP 1

Submit Your Essay/Homework Instructions

By clicking on the "PLACE ORDER" button, tell us your requires. Be precise for an accurate customised essay. You may also upload any reading materials where applicable.

STEP 2

Pick A & Writer

Our ordering form will provide you with a list of writers and their feedbacks. At step 2, its time select a writer. Our online agents are on stand by to help you just in case.

STEP 3

Editing (OUR PART)

At this stage, our editor will go through your essay and make sure your writer did meet all the instructions.

STEP 4

Receive your Paper

After Editing, your paper will be sent to you via email.

× How can I help you?