Potassium permanganate hydrogen peroxide titration

Potassium ozonide, 735 Potassium permanganate chemiluminescence, 643 hydrogen peroxide titration, 627 ozonide redox titration, 736 Potassium peroxymonosulfate, dioxirane preparation, 26, 1020-30, 1130 Potassium superoxide, commercial availability, 620... 

In what way does a solution of hydrogen peroxide react with (a) chlorine water, (b) potassium permanganate solution, (c) potassium dichromate solution, (d) hydrogen sulphide 50 cm of an aqueous solution of hydrogen peroxide were treated with an excess of potassium iodide and dilute sulphuric acid the liberated iodine was titrated with 0.1 M sodium thiosulphate solution and 20.0 cm were required. Calculate the concentration of the hydrogen peroxide solution in g 1" ... 

Hydrogen peroxide solution and potassium bromide are two pharmaceutical substances that may be estimated by employing 0.1 N potassium permanganate solution and adopting the direct titration method. 

Procedure Dilute 10 ml of hydrogen peroxide solution to 250 ml with DW in a volumetric flask. To 25.0 ml of this solution add 5 ml of 5 N sulphuric acid and titrate with 0.1 N KMn04 to a permanent pink endpoint. Each ml of 0.1 N potassium permanganate is equivalent to 0.001701 g of H202. 

Quantitative Determination. —Weigh off 1 gm. of hydrogen peroxide in a graduated flask of 100 cc. capacity, and fill with water to the mark. Dilute 20 cc. of this liquid with 50 cc. of water, add 40 cc. of 16 per cent sulphuric acid, and titrate with decinormal potassium permanganate. At least 35 cc. should be required to produce the end-point. 

The most commonly used technique for the determination of hydrogen peroxide in an industrial environment is the classical manual titration of a bath sample with potassium permanganate after acidification with sulphuric acid. In the past, numerous attempts have been made to perform the determination by means of an instrumental technique however, disadvantages were always encountered, which, up to now, have hindered the breakthrough of an alternative method. 

Ex. 1 The decomposition of hydrogen peroxide was studied by titrating it at different intervals of time with potassium permanganate. Calculate the velocity constant for it from the following data, if the reaction is of the first order. 

Assay Transfer about 200 mg of sample, accurately weighed, into a 250-mL beaker, add 50 mL of 1 10 sulfuric acid, allow to stand for at least 3 min, stirring occasionally, and titrate with 0.1 N potassium permanganate to a light pink color that persists for at least 20 s. Calculate the total peroxides, P, as grams of hydrogen peroxide equivalents per 100 g of the sample, by the equation... 

The concentration of the hydrogen peroxide may be determined by titration with 0.2 JV potassium permanganate in acid solution. 

Hydrogen peroxide (H Op can be titrated with potassium permanganate (KMnO ) in an acid medium. H,O, is the reducing agent and KMnO is the oxidising agent. 

The strength of a hydrogen peroxide solution can be estimated by titration with N/10 potassium permanganate. If the strength of the sample exceeds 5 vol it should be diluted 1 in 10, and 25 ml of the resultant solution are titrated, after acidification with sulphuric acid, with n/10 permanganate until a permanent pink colour makes its appearance. If the original sample... 

The concentration of a hydrogen peroxide solution can be conveniently determined by titration against a standardized potassium permanganate solution in an acidic medium according to the following equation ... 

Naphthoquinone (198 mg, 1,25 mmol) was added and the mixture was poured into an autoclave containing a glass liner. The reactor was then pressured to 60 bar partial pressure of air and 10 bar partial pressure of CO in order to form a non-flammable gas mixture and the reaction was carried out for 1 hour at 70°C. At the end of the reaction, the hydrogen peroxide concentration was evaluated by titration with potassium permanganate. 

Equilibrium was reached isothermally in an ice-water bath. Repeated analyses were made to check the equlllbrltun. The dihydrogenphosphate ion content was determined gravimetrically as ammonium phosphomolyb-date. The hydrogen peroxide content was determined by titration with potassium permanganate. 

A solution of hydrogen peroxide, H2O2, is titrated with a solution of potassium permanganate, KMn04. The reaction is... 

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