What is the role of 1/10 phenanthroline in the reaction?
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What is the role of 1/10 phenanthroline in the reaction?
Abstract. It is widely believed that the iron chelator 1,10-phenanthroline (phen) is able to fully block the Fenton reaction by forming a complex (Fe(phen)3(2+), also known as ferroin) that cannot react with H2O2.
What type of ligand is 1/10 phenanthroline?
chelating bidentate ligand
1,10-Phenanthroline (phen) is a classic chelating bidentate ligand for transition metal ions that has played an important role in the development of coordination chemistry [1], [2], [3] and still continues to be of considerable interest as versatile starting material for organic, inorganic and supramolecular chemistry.
What is the purpose of O phenanthroline?
o-Phenanthroline is a metal chelating agent that prevents the induction of chromosomal aberrations in streptozotocin-treated cells.
Which ion is detected by 1 10 phenanthroline?
1,10-Phenanthroline forms with Fe(III) a blue complex (λmax 585 nm) which has been used for determining larger amounts of iron.
What is the structure of 1/10 phenanthroline?
C12H8N21,10-Phenanthroline / Formula
What observable color or opacity change occurs when 1/10-phenanthroline is added?
Some chemical indicators have very narrow and sensitive range. For instance, one example of a sensitive oxidation-reduction indicator is ferrous 1,10-phenanthroline. The colour of the indicator changes from red to pale blue if the oxidation potential is increased to 1.08 volts from 1.04 volts.
What is the conditions needed for determination of iron using 1/10-phenanthroline?
Summary. A rapid, accurate method for the determination of iron using hydroxylamine hydrochloride, sodium acetate buffer, and 1,10-phenanthroline is described. The ash is taken up with hydrochloric acid (1 + 1) and heated for 5 minutes. No interference from pyrophosphates, copper and nickel was observed.
What is the formula of phenanthroline?
How do you dissolve phenanthroline?
Prepare a 1,10-phenanthroline solution by dissolving 0.1 g of 1,10-phenanthroline in 30 mL of distilled water with the aid of stirring and gentle heating. Cool and dilute to 50 mL. Store in a dark place. Preparation of Standard Iron Solutions and Calibration Curve.
Why is hydroxylamine hydrochloride and Ortho phenanthroline added to the sample solutions?
form with the 1,10-phenanthroline ligand [5]. The hydroxylamine hydrochloride is added to the solution to lower the pH and act as a reducing agent to prevent the oxidation of Fe(II) to Fe(III) [4].
How do you measure iron content?
Iron +II is reacted with o-phenanthroline to form a coloured complex ion. The intensity of the coloured species is measured using a Spectronic 301 spectrophotometer. A calibration curve (absorbance versus concentration) is constructed for iron +II and the concentration of the unknown iron sample is determined.
How is iron concentration calculated?
You can calculate the Fe concentration in each of the 3 solutions that you prepared. Calculate the number of moles that entered with your initial additions, and divide it by the volume of your final solutions (50 mL).
What is the molecular weight of 1/10-phenanthroline?
180.21 g/mol1,10-Phenanthroline / Molar mass
What is the purpose of hydroxylamine hydrochloride in this experiment and why was this important?
The hydroxylamine hydrochloride is added to the solution to lower the pH and act as a reducing agent to prevent the oxidation of Fe(II) to Fe(III) [4]. The sodium acetate is added to the solution to act as a pH buffer to maintain the pH in a range where all of the aqueous iron will reside in the Fe2+ oxidation state.
What is determination of iron?
Determination of Iron in Water. Determination of Iron in Water. Introduction: Any solution which is colored or can be made colored by adding a complexing agent can be analyzed using a visible spectrophotometer, such as the Spec 20.
