blob: 60dd2ed748c6ee6836e28a8267468aa88bc55ff0 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
|
//Calculate the Entropy change when Ideal gas are expand to Isothermaly ,Estimate the probability that the gas will contract spontaneously from the final volume to initial volume
//Example 5.1
clc;
clear;
n=2; //Number of moles of gas in mol
R=8.314; //Gas consant in J K^-1 mol^-1
V2=2.4; //final volume of the gas in L
V1=1.5; //initial volume of the gas in L
delS=n*R*log(V2/V1); //Entropy change in J K^-1
printf("Entropy change = %.1f J K^-1",delS);
Kb=1.381*10^-23; //Boltzman's constant in J K^-1
r=exp(-delS/Kb); //probability for spontaneous contraction=W1/W2 (Probability for spontaneous contraction is zero butit must be with the aid of external force)
printf("\nProbability for spontaneous contraction = %.0f",r);
|