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//Section-14,Example-2,Page no.-PC.126
clc;
CH_3COONa_1=0.01
CH_3COOH_1=0.1
K_a=1.75*10^-5
pK_a=-log10(K_a)
pH1=pK_a +(log10(CH_3COONa_1/CH_3COOH_1))
disp(pH1,'pH of the given buffer solution')
HCl=0.0002
CH_3COONa_2=0.01+0.0002
CH_3COOH_2=0.1-0.002
pH2=pK_a +(log10(CH_3COONa_2/CH_3COOH_2))
disp(pH2,'pH of the solution after addition of HCl')
C_1=pH1-pH2 //change in pH
CH_3COONa_3=0.01+0.002
CH_3COOH_3=0.1-0.002
pH3=pK_a +(log10(CH_3COONa_3/CH_3COOH_3))
pH4=pH1-pH3 //change in pH
disp(pH4,'Required pH')
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