Calculating stoichiometric co-efficient for different fuels

Aim : To to calculate the stoichiometric co-efficient (ar) for each fuel.

Equations:

1. generic alkane fuel the combustion process equation:

`C_(2n+2) + a_r(O_2 + 3.76N_2) = aCO_2 + bH_2O + cN_2`

2. generic alkane fuel the combustion process equation:

`C_nH_(2n) + a_r(O_2 + 3.76N_2) = aCO_2 + bH_2O + CN_2`

3. generic alkane fuel the combustion process equation:

`C_nH_(2n) + a_r(O_2 + 3.76N_2) = aCO_2 + bH_2O + cN_2`

Relation between stichometric co-efficient and the number of carbon atoms:

1. Alkane :

`a_r = frac{3*n+1}{2}`

2. Alkene :

`a_r = frac{3*n}{2}`

3. Alkyne :

`a_r = frac{3*n-2}{2}`

Code Snippet :

%% clearing the data on the interface
close all
clear all
clc

% No.of carbons per mole.
n = 1:10;     

% Defined function to get stichometric co-efficients for various number of
% atoms
[a1,a2,a3] = alkane_alkene_alkyne(n);      

%% plots

plot(n,a1)
hold on
plot(n,a2)
plot(n,a3)
legend('alkane','alkene','alkyne','Location','northwest')
xlabel('no.of carbon atoms (n)')
ylabel('stichometric co-efficient (a_r)')
title('n vs a_r')

step-wise Explanation of code :

1. At first used , clearing commands

2. clc - clear the command window.

3. clear all - clear the workspace.

4. close all - clear all the figure in the present interface.

5. Declared a variable n for number of carbons , using split rule.

6. Defined a function , get sticometric co-efficients for different fuels with varing number of atoms.

7. plots the data using plot command.

8. hold on command used , not to clear the data of existing plot.

9. legend command used to define the curves.

9. used xlabel , ylabel for to label the x and y-axis.

10. title command for the title of the figure.

Function code snippet:

function [ar_alkane,ar_alkene,ar_alkyne] = alkane_alkene_alkyne(n)

ar_alkane = (3*n+1)/2;
ar_alkene = (3*n)/2;
ar_alkyne = (3*n-1)/(2);

end

Step-wise explanation of code snippet :

1. Defined stichometric co-efficients variables for alkanes , alkenes , alkynes.

2. stored the data in the respective output variables.

Results :

Conclusion :

1. Plotted the data for stichometric co-efficients for number of atoms.