93. Solving a chemistry problem

Product description

According to the dependence of saturated vapor pressure on the temperature and density of a given substance A (dsolid and dl in kg / m3) at the triple point (tr.t.):

• plot lgP versus 1/T;
• determine the coordinates of the triple point from the graph;
• calculate the average heat of evaporation and sublimation;
• plot the dependence of saturated steam pressure on temperature;
• determine the heat of fusion of a substance at the triple point temperature;
• calculate dT/dp for the melting process at the triple point temperature;
• calculate the melting point of the substance at pressure p, Pa;
• calculate the change in entropy, Gibbs and Helmholtz energy, enthalpy and internal energy for the process of sublimation of 1 mol of substance at the triple point;
• determine the number of thermodynamic degrees of freedom at the following values ​​of temperature and pressure:

a) Ttr.t , ptr.t;

b) Tntc, p= 1.013 x 105 Pa;

c) Tntk, ptr.t

Option 8

State

Solid state

T, K 276.6 278.2 279.2 280.2 281.4

R, Pa 1413 1706 1879 2066 2372

liquid state

T, K 277.2 279.2 281.4 283.2 285.2 288.7

R, Pa 1826 2082 2372 2626 2932 3279

Terms

M=46

Р=950*105 Pa

dtv=1240

j=1290

Additional information

If you do not open the file - install the RAR archiver. Inside the archive you will find a solution in Word format.