REVISION EXPERIMENTAL DEL INTERVALO DE pH PARA LA DETERMINACIÓN DE CLORUROS POR EL METODO DE MOHR
Abstract
Se realizó una revisión experimental del intervalo de pH de titulación, para determinar iones cloruros en soluciones que contienen 0,0100 M de iones cloruros e iones plata utilizando el Método de Mohr. Se compararon volúmenes del punto equivalente obtenidos por potenciometría con los volúmenes del punto final corregidos con respecto al blanco a valores de pH dados. Los análisis de resultados, dieron 1,67 % a 1,76 % como error en las medidas en el intervalo de pH entre 6,0 y 9,0. Sin embargo mejores resultados pueden ser logrados con un error de 1,50 % en el intervalo de 7,0 a 8,0.
A revision of experimental pH titration range has been carried out in order to determine chloride ions in solutions containing 0,0100 M chloride and silver ions using the Mohr Method. Volumes at equivalent point obtained by potentiometry were compared with final volumes corrected against a blank at given pH values. Analysis of results, gave 1,67 % to 1,76 % as error in the measurements at the pH range between 6,0 y 9,0. However better results can be achieved with 1,50 % of error at the range from 7,0 to 8,0.
A revision of experimental pH titration range has been carried out in order to determine chloride ions in solutions containing 0,0100 M chloride and silver ions using the Mohr Method. Volumes at equivalent point obtained by potentiometry were compared with final volumes corrected against a blank at given pH values. Analysis of results, gave 1,67 % to 1,76 % as error in the measurements at the pH range between 6,0 y 9,0. However better results can be achieved with 1,50 % of error at the range from 7,0 to 8,0.
Description
Vol. 23, No. 1