A titration can define the volume of one solution required to react correctly with an identified volume of a different solution. Titration commonly comprises of reactions such as redox reactions and reactions involving precipitations, different than acid-base reactions.
“Titration can discern the volume of one solution required to react exactly with a known volume of a different solution.”
The equation for Titration Formula is articulated as:
Where,
1000 = factor relating mg to grams
W = mass of the sample
N = normality of titrant
V = volume of titrant
Eq.wt = equivalent weight of acid
Though commonly the Titration Formula is articulated as:
Solved Examples
Problem 1: Compute the titratable acidity if 17.5ml of 0.085N NaOH is required to titrate a 15ml sample of juice, the sum titratable acidity of that juice, articulated as the percentage of citric acid. (molecular weight = 192; equivalent weight = 64)
Solution:
Now we use the equation:
% of acid = 0.085×17.5×64/15×10 = 0.635%
Notice that the equivalent weight of anhydrous citric acid always is used in calculating and reporting the results of titration.