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diff --git a/1427/CH34/EX34.22/34_22.sce b/1427/CH34/EX34.22/34_22.sce
new file mode 100644
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+++ b/1427/CH34/EX34.22/34_22.sce
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+//ques-34.22
+//Calculating quantum yield of a reaction
+clc
+w=424;//wavelength (in nm)
+t=20;//time (in min)
+V=36.7;//volume of Sodium sulphite solution used (in mL)
+N=0.00564;//normality of Sodium sulphite solution
+I=9.13*10^3;//intensity (in erg/s)
+n=(V/1000)*N/2;//moles of ethylene iodine decomposed
+q=I*t*60;//(in ergs)
+QY=(n*1.196*10^15)/(q*w);
+printf("The quantum yield of the reaction is %.2f.",QY);