Search results
Results from the WOW.Com Content Network
Calconcarboxylic acid (IUPAC name 3-hydroxy-4-[(2-hydroxy-4-sulfonaphthalen-1-yl)diazenyl]naphthalene-2-carboxylic acid; commonly called Patton and Reeder's Indicator) is an azo dye that is used as an indicator for complexometric titrations of calcium with ethylenediaminetetraacetic acid (EDTA) in the presence of magnesium. [2]
Corrosion of iron nail with coiled copper in medium with ferroxyl indicator. Ferroxyl indicator, or rust indicator, is a solution containing potassium hexacyanoferrate(III), phenolphthalein and sodium chloride. It turns blue in the presence of Fe 2+ ions, and pink in the presence of hydroxide (OH −) ions.
Cerimetry or cerimetric titration, also known as cerate oximetry, is a method of volumetric chemical analysis developed by Ion Atanasiu.It is a redox titration in which an iron(II)–1,10-phenanthroline complex color change indicates the end point.
Second step is to measure absorbance (A’) of unknown solution and match it with the known absorbance-concentration plot of the standard solution. Thereby calculating the molar concentration of the unknown solution. This is calculated by using the formula, concentration of unknown =A’/(E*l). This can also be calculated using this given ...
Download as PDF; Printable version; ... Chemical formula. C 13 H 8 N 3 NaO 5 (Na salt) C 13 H 9 N 3 O 5 (acid) ... It is mainly used as a pH indicator. Preparation
Download as PDF; Printable version; In other projects ... Tashiro's indicator is a pH indicator (pH value: 4.4–6.2), mixed indicator composed of a solution of ...
Ferroin is the chemical compound with the formula [Fe(o-phen) 3]SO 4, where o-phen is an abbreviation for 1,10-phenanthroline, a bidentate ligand. The term "ferroin" is used loosely and includes salts of other anions such as chloride. [1] Ferroin is one of many transition metal complexes of 1,10-phenanthroline.
A complexometric indicator is an ionochromic dye that undergoes a definite color change in presence of specific metal ions. [1] It forms a weak complex with the ions present in the solution, which has a significantly different color from the form existing outside the complex. Complexometric indicators are also known as pM indicators. [2]