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diff --git a/1427/CH5/EX5.27/5_27.sce b/1427/CH5/EX5.27/5_27.sce
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+++ b/1427/CH5/EX5.27/5_27.sce
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+//ques-5.27
+//Calculating pH of acetic acid and volume required
+clc
+M=1;//molarity of acetic acid
+Ka=1.8*10^-5;
+v=10;//volume of acetic acid (in L)
+a1=sqrt(Ka*v);//degree of dissociation
+pH=-log10(a1/v);
+p1=2*pH;//new pH
+//a2 = antilog(-p1)
+a2=1.8*10^-6;//new degree of dissociation
+V=Ka/a2^2;//volume required (in L)
+printf("pH of acetic acid is %.4f and volume required is %d L.",pH,V);