The rainbow reaction: pH and universal indicator solution

1993 ◽  
Vol 70 (5) ◽  
pp. 406
Author(s):  
Howard Moore ◽  
Elizabeth B. Moore
Keyword(s):  
Indicator Solution ◽  
Universal Indicator

Data-driven discovery of a universal indicator for metallic glass forming ability

2021 ◽  
Author(s):  
Ming-Xing Li ◽  
Yi-Tao Sun ◽  
Chao Wang ◽  
Li-Wei Hu ◽  
Sungwoo Sohn ◽  
...  
Keyword(s):  
Metallic Glass ◽  
Glass Forming Ability ◽  
Data Driven ◽  
Glass Forming ◽  
Universal Indicator

scholarly journals SELECTIVE MERCURIMETRIC TITRATION ASSAY OF CHLORIDE CONCENTRATION IN THE WATER OF GREEN COCONUTS USING NOVEL INDICATOR SYSTEM

2017 ◽  
Vol 9 (3) ◽  
pp. 268
Author(s):  
Shivaji Rangnath Labhade
Keyword(s):  
Statistical Treatment ◽  
Chloride Concentration ◽  
Potassium Thiocyanate ◽  
Indicator System ◽  
Coconut Water ◽  
Stoichiometric Ratio ◽  
Indicator Solution ◽  
End Point ◽  
Red Color

Objective: A selective mercurimetric titration procedure is proposed for the assay of chloride concentration in the water of green coconut using mercury(II) nitrate [(Hg(NO3)2] reagent and iron(III) nitrate [Fe(NO3)3] with synthetically prepared mercury(II) thiocyanate [Hg(SCN)2] indicator system.Methods: An indicator solution was prepared by titrating Hg(NO3)2 against potassium thiocyanate (KSCN) till a red color end point using Fe(NO3)3. Then a known amount of Hg(NO3)2 was added to indicator solution and titrated against the water of green coconut till the original red color reappeared.Results: The concentration of chloride present in the volume of coconut water utilized in between these two end points was found to be reacting in the 2:1 stoichiometric ratio with the Hg(NO3)2 taken in the second step of the titration. The statistical treatment of the experimental data obtained by using standard solutions of sodium chloride (NaCl) indicates that the procedure is precise and accurate. The phosphate, sulfate, organic compounds and inorganic minerals present in the coconut water did not interfere with the measurement of chloride by this procedure. Both the cationic mineral value (was also determined by complexometric titration) and chloride concentration in the coconut water were found to be decreased with the development of the coconuts.Conclusion: The proposed procedure of determination of chloride concentration in the water of green coconut is simple, reliable and inexpensive. This procedure is excellent for determination of chloride in the acidic solution without precise adjustment of the pH for detection of the end point. Owing to the homogenous reaction condition no titration errors those are commonly encountered by co-precipitation in the argentometric assay of chloride. 

scholarly journals Extra investigation of the self-organized critical Manna model at higher critical dimension

2021 ◽  
pp. 1-12
Author(s):  
Andrey Viktorovich Podlazov
Keyword(s):  
Power Law ◽  
Critical Dimension ◽  
The Self ◽  
Two Dimensional ◽  
Upper Critical Dimension ◽  
Self Organized ◽  
Logarithmic Corrections ◽  
Universal Indicator ◽  
Sandpile Models ◽  
Power Law Distributions

I investigate the nature of the upper critical dimension for isotropic conservative sandpile models and calculate the emerging logarithmic corrections to power-law distributions. I check the results experimentally using the case of Manna model with the theoretical solution known for all statement starting from the two-dimensional one. In addition, based on this solution, I construct a non-trivial super-universal indicator for this model. It characterizes the distribution of avalanches by time the border of their region needs to pass its width.

Cobalt not detected in contemporary US consumer paint colorants by cobalt indicator solution or X-ray fluorescence spectroscopy

2018 ◽  
Vol 78 (5) ◽  
pp. 355-356 ◽  
Author(s):  
Dathan Hamann ◽  
Carsten R. Hamann ◽  
Patrick Kishi ◽  
Torkil Menné ◽  
Jacob P. Thyssen
Keyword(s):  
Fluorescence Spectroscopy ◽  
Indicator Solution ◽  
X Ray

Universal Indicator

2019 ◽  
Author(s):  
Maria F. Camões ◽  
Gary D. Christian ◽  
David Brynn Hibbert
Keyword(s):  
Universal Indicator

Universal indicator for pH 1-13

1956 ◽  
Vol 33 (10) ◽  
pp. 517 ◽  
Author(s):  
F. R. Richardson
Keyword(s):  
Universal Indicator
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