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+//To Calculate the rate Constant for the Reaction
+
+//Example 12.1
+
+clc;
+clear;
+
+t=[0,2000,4000,6000,8000,10000,12000];//Time in seconds
+
+A=[1.5,1.26,1.07,0.92,0.81,0.72,0.65];//Absorbance
+
+A0=1.5;//Absorbance at t=0s
+
+Ainf=0.40;//Absorbance at t=infinity
+
+for i=1:6
+    x(i)=t(i);//Putting the x-axis as t/s
+end 
+
+for i=1:6
+    y(i)=log((A(i)-Ainf)/(A0-Ainf));//Putting the y-axis as ln((At-Ainf)/(A0-Ainf))
+end
+
+plot(x,y);//Plotting the Graph between x-axis and y-axis
+
+xlabel("t/s", "fontsize", 2);//Putting the x-axis as t/s
+
+ylabel("ln((At-Ainf)/(A0-Ainf))", "fontsize", 2);//Putting the y-axis as ln((At-Ainf)/(A0-Ainf))
+
+m=-(y(2)-y(1))/(x(2)-x(1));//Calculating the slope (Rate Constant of Reaction) of Graph
+
+printf("The rate constant for the reaction = %.3f*10^-4 s^-1",m*10^4);