blob: 797b1395688a33462027f4d5d7a7e2ada8ce5d95 (
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
26
27
|
//Calculate the Standard Gibbs Energy change for the reaction (delrG) N2(g)+3H2(g)=2NH3(g)
//Example 9.2
clc;
clear;
Po=(760*10^5)/(1.01325*10^5); //Standard pressure of the gas in torr
PN2=190; //Partial pressure of the N2 gas in torr
PH2=418; //Partial pressure of the H2 gas in torr
PNH3=722; //Partial pressure of the NH3 gas in torr
Kp=((PNH3/Po)^2)/((PN2/Po)*(PH2/Po)^3); //Equilibrium constant for reaction
R=8.314; //Gas constant in J K^-1 mol^-1
T=298; //Temperature of the gas in K
delrGo=-33.2*10^3; //Standard Gibbs energy for the reaction J mol^-1
delrG=(delrGo+(R*T)*log(Kp))/1000; //Standard Gibbs Energy change for the reaction in kJ mol^-1
printf("Standard Gibbs Energy Change = %.1f kJ mol^-1",delrG);
|
