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+//Chapter 9 Ionic Equilibria and Buffer Action
+
+clc;
+clear;
+
+//Initialisation of Variables
+K= 1.8*10**-5
+V= 500 //ml
+c1= 0.3 //M
+c2= 0.2 //M
+
+//CALCULATIONS
+x= V*c1/1000
+y= V*c2/1000
+C= K*y/x
+
+//RESULTS
+mprintf("Hydronium-ion concentration = %.2e mole per litre",C)