RT other
T1 Making pH calculations in the titration of strong protolytes
A1 Milla González, Miguel
A2 Química Analítica
K1 volumetric analysis
K1 Acid-base titrations
K1 titration of a strong acid with a strong base
K1 quantitative analysis
K1 calculating pH of two points (before and after ep) for mixtures of strong electrolytes
K1 titration curve of strong protolytes
K1 spreadsheet for drawing a titration cuve
AB Titration graphs of protolytic systems are very useful among other things to find the equivalence point (ep), choose the most suitable indicator, calculate the titration error and decide whether a given titration is feasible or not under certain conditions. The main feature of a titration curve is the pH jump that occurs in the vicinity of the equivalence point. Titration graphs can be obtained experimentally using the potentiometric method with the pH electrode. They also can be obtained theoretically by plotting the pH dependence equation with the added titrant volume or with the titrated fraction. In this exercise, we propose the pH calculation for two points in the titration of strong protolytes (HCl solution vs. NaOH solution). Some features of the titration curves involving these protolytes are presented together with some simple instructions for drawing by hand these curves and with the use of a spreadsheet (interactive graphs). Two final exercises of self-evaluation are proposed.
YR 2013
FD 2013-10-21T00:00:00Z
LK http://hdl.handle.net/10498/15562
UL http://hdl.handle.net/10498/15562
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 10-may-2026