Simple instrument for titrimetry without visual indicators. gasometric titrations: Cerimetry, chlorometry, nitrate, nitrite, hydroxide and carbonate determination
✍ Scribed by Otto Richard Gottlieb
- Publisher
- Elsevier Science
- Year
- 1955
- Tongue
- English
- Weight
- 870 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0003-2670
No coin nor oath required. For personal study only.
✦ Synopsis
In previous papers' a _ .
gas prcssurc tcchniquc to locntc tllc end-point in volumetric analysis was dcvclopcd.
The outstanding feature of this technique is the fact that solutions which for some reason cannot bc titrated to a visual end-point, can bc titratccl, frcclucntly by standard mcthocls, in a simple, incxpcnsivc instrument. In the prcscnt communication ii method is described, bj wllich the titrimetric problems previously mentioned can hc solvccl ~ral~hicnlly. This is acllicvccl by adding the titrant to the sample solution in mcasurcd increments and recording the cor-rcsponclin~ &as prcssurc or volume of the system. The prcssurc or . volume is tlicn plo.ttcd against the volume of aclclccl titrant.
L3y clctcrmining thrcb or four points bcforc tlic cquivalcncc l'oint and two or three after it, the end-point is found graphically at the intersection of two straight lines. Such gasometric titrations arc not only much less tedious and cxkr to perform tllan the prcviously described drop by drop titrations, but they arc also less time-consuming. CARL30NA-I-E DETI~RJIlNA'l-ION LY O-I-I-0 T<ICI-IhRD COTTl,I EIJ