Get a look at images, photos, videos, and animations that encompass many facets of teaching and learning about analytical chemistry.
An alternative to using a visual indicator to locate a titration’s end point is to continuously monitor the titration’s progress using a sensor whose signal is a function of the analyte’s concentration. […]
The illustration below shows the relationship between pH and an indicator’s color. The ladder diagram defines pH values where each of the indicator’s two forms the weak acid form, HIn, which in […]
For most acid–base titrations the inflection point, the point on a titration curve having the greatest slope, very nearly coincides with the equivalence point. The red arrows in the following figure for […]
This set of illustrations shows the steps for quickly sketching an good approximation of the titration curve for the titration of 50.0 mL of 0.100 M CH3COOH with 0.200 M NaOH: (a) […]
A simple illustration of a typical volumetric buret. The stopcock is in the open position, allowing the titrant to flow into the titrand’s solution. Rotating the stopcock controls the titrant’s flow rate.
An acid-base reaction is exothermic, which means we can follow the titration by monitoring the titration mixture’s temperature as a function of the volume of titrant added. A typical thermometric titration curve […]
Examples of titration curves: (a) complexation titration of 25.0 mL of 1.0 mM Cd2+ with 1.0 mM EDTA at a pH of 10 in which the y-axis displays the titrand’s equilibrium concentration as […]
Typical acid–base titration curve showing how the titrand’s pH changes with the addition of titrant. The titrand is a 25.0 mL solution of 0.100 M HCl and the titrant is 0.100 M […]
Illustration showing four possible mechanisms for the solid-state extraction of an analyte: (a) adsorption onto a solid substrate; (b) absorption into a thin polymer film or chemical film coated on a solid […]
In a thermogravimetric analysis we measure the mass of a sample while heating the sample over time. The top photo shows a typical thermogravimetric analyzer and the bottom photo shows a close-up […]
Illustration showing the equipment for filtering a precipitate through a filtering crucible. Suction from a vacuum, often from a water aspirator, pulls the solution through the filtering crucible leaving the precipitate behind. […]
Illustration showing how to prepare a filter paper cone for gravity filtration. The filter paper circle in (a) is folded in half (b), and folded in half again (c). The folded filter […]
