Benzenephosphinic Acid as Analytical Reagent Gravimetric Determination of Ferric Iron

1957 ◽  
Vol 29 (1) ◽  
pp. 109-113 ◽  
Author(s):  
J. E. Banks ◽  
D. A. Skoog
Keyword(s):  
Ferric Iron ◽  
Gravimetric Determination ◽  
Analytical Reagent

scholarly journals 2-Hydroxy-5-methylbenzophenone oxime(HMBO) as an Analytical Reagent for Gravimetric Determination of Cu(II)

2007 ◽  
Vol 4 (1) ◽  
pp. 97-102 ◽  
Author(s):  
S. K. Shingadia ◽  
K. K. Desai
Keyword(s):  
Copper Ion ◽  
Molar Absorptivity ◽  
Ratio Method ◽  
Formation Reaction ◽  
Gravimetric Determination ◽  
Analytical Reagent ◽  
Gibb’S Free Energy ◽  
The Stability ◽  
Job's Method

2-Hydroxy-5-methylbenzophenone oxime (HMBO) was developed as a new analytical reagent for the gravimetric determination of divalent copper ion. In pH rang of 3.0 to 6.0, the reagent gives a buff colored precipitate with Cu(II). Job’s method and mole ratio method revealed that the stoichiometry of the complex is 1:2 (metal: ligand). Beer’s law is obeyed up to 61.25 ppm of Cu(II). Molar absorptivity and Sandell’s sensitivity at 400 nm were found to be 6.32 × 102L mol-1cm-1and 0.359 μg/cm2respectively. The stability constant of Cu(II)-HMBO complex is found to be 2.43 × 109. Gibb’s free energy change for complex formation reaction was found to be -12.88 Kcal/mol. The reagent can be used for the analysis of brass and alloy.

scholarly journals 2-Hydroxy-4-n-propoxy-5-bromoacetophenone oxime as an Analytical Reagent for Gravimetric Determination of V(V)

2009 ◽  
Vol 6 (2) ◽  
pp. 303-307 ◽  
Author(s):  
Ambily P. Nair ◽  
J. Christine
Keyword(s):  
Molar Absorptivity ◽  
Ratio Method ◽  
Gravimetric Determination ◽  
Pentavalent Vanadium ◽  
Analytical Reagent ◽  
Gibb’S Free Energy ◽  
The Stability ◽  
Ph Range ◽  
Job's Method

2-Hydroxy-4-n-propoxy-5-bromoacetophenone oxime (HnPBAO) was developed as a new analytical reagent for the gravimetric determination of pentavalent vanadium ion. In the pH range 4.0-6.0, the reagent gave a brown coloured precipitate with V(V). Job’s method and Mole ratio method revealed that the stoichiometry of the complex is 1:1 (metal: ligand). Beer’s law is obeyed up to 20.38 ppm of V(V). Molar absorptivity and Sandells sensitivity at 450 nm were found to be 10.22 × 102L/mol/cm and 0.049 µg/cm2respectively. The stability constant of V(V)-HnPBAO complex is found to be 1.195 × 106. Gibb’s free energy change for complex formation reaction was found to be –8.34 kcal/mol. The reagent can be used for the analysis of vanadium in ferro-vanadium alloys.

o-(p-Toluylsulfonamido)aniline (T-Sulfonamidine) as a New Type of Analytical Reagent Gravimetric Determination of Cupric Ion

1960 ◽  
Vol 32 (10) ◽  
pp. 1342-1344 ◽  
Author(s):  
J. H. Billman ◽  
N. S. Janetos ◽  
Robert. Chernin
Keyword(s):  
Cupric Ion ◽  
Gravimetric Determination ◽  
New Type ◽  
Analytical Reagent

scholarly journals 2-Hydroxy-4-Methoxybenzophenone Oxime as an Analytical Reagent for Copper(II)

2005 ◽  
Vol 2 (2) ◽  
pp. 161-164 ◽  
Author(s):  
Miss Krishna Purohit ◽  
K. K. Desai
Keyword(s):  
Molar Absorptivity ◽  
Complex Formation Reaction ◽  
Formation Reaction ◽  
Spectrophotometric Methods ◽  
Gravimetric Determination ◽  
Analytical Reagent ◽  
Gibb’S Free Energy ◽  
The Stability ◽  
Metal Ligand

2-Hydroxy-4-methoxybenzophenoneoxime (HMBO) was developed as a new analytical reagent for the gravimetric determination of Cu(II). In pH 2.5-9.0 the reagent gives brown coloured precipitate with Cu(II). Spectrophotometric methods revealed that the stoichiometry of the complex is 1:2 (metal: ligand). Beer's law is obeyed up to 31.75 ppm of Cu(II). Molar absorptivity and Sandell's sensitivity at 400 nm were found to be 7.0×102L mol-1cm-1and 0.090 μg/cm2respectively. The stability constant of Cu(II)-HMBO complex is found to be 6.13×109. Gibb’s free energy change for complex formation reaction was found to be -13.93 Kcal/mol. The reagent can be used for the analysis of brass.

2-Hydroxy-1-acetonaphthoneoxime as analytical reagent: Gravimetric determination of nickel and palladium

1978 ◽  
Vol 87 (8) ◽  
pp. 291-294
Author(s):  
V V Balakrishna ◽  
R C Hussain ◽  
N Appala Raju
Keyword(s):  
Gravimetric Determination ◽  
Determination Of Nickel ◽  
Analytical Reagent

A Cheap and useful Form of Apparatus for the Gravimetric Determination of Co2

1893 ◽  
Vol 36 (926supp) ◽  
pp. 14804-14804
Author(s):  
J. H. Hoseason
Keyword(s):  
Gravimetric Determination
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