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Why hydrogen peroxide was not heated before titrated with potassium permanganate?
Wiki User
∙ 15y ago
Well the question is not very specific, but I think you may be reffering to the boiling of water before acid-base titrations. Water is boiled previous to acid-base titrations because if left open to the atmosphere @ STP water will absorb carbon dioxide until the pH is roughly 5.5. This will obviously adversly affect the accuracy of an acid-base titration. In the permanganate titration, a redox reaction occurs in the presence of an acidic solution.
Wiki User
∙ 15y ago
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A certain amount of hydrogen peroxide was dissolved in 100 ml of water and then titrated with 1.68m kmno4 how much h2o2 was dissolved if the titration required 22.3 ml of the kmno4 solution?
Mass of H2O2 = 0.637 g
Equation between potassium iodate and sodium thiosulphate?
This reaction may be misunderstood as a direct reaction between the thiosulphate and iodate ions , however, in practice an iodide and acid mediated production of iodine from the iodate is used to react with the thiosulphate. A standard reaction used to calibrate a solution of sodium thiosulphate is as follows: Acid and potassium iodide are added to a solution of potassium iodate getting the following reaction: KIO3 + 5KI + 3H2SO4 = 3I2 + 3K2SO4 + 3H2O represented by the following ionic equation: IO3- + 5I- + 6H+ = 3I2 + 3H2O Thiosulpathe is titrated against this solution (effectively against iodine): I2 + 2Na2S2O3 = Na2S4O6 + 2NaI represented by the following ionic equation: I2 + 2S2O32- = S4O62- + 2I- where the dark brown coloured solution of iodine turns pale yellow and finally colourless as the reaction proceeds (starch is used as indicator after the pale yellow transition forming a black solution due to an iodine-starch complex which turns colourless upon further addition of thiosulphate).
Would your calculated molarity of NaOH be too high too low or unaffected if you titrated to a dark pink color?
it will increase the molarity of the acetic acid
A 25.0 ml of 0.106M KIO3 is put into a 250 ml flask and is titrated to a stoichiometric point with 16.25 ml of a sodium thiosulfate solutiom What Molarity of sodium thiosulfate?
Jodate: IO3- + 6e- + 6H+ --> I- + 3H2Oequivalency to:Thio: 6S2O32- --> 3S4O62- + 6e-25.0 ml * 0.106 mmol/ml (KIO3) = 2.65 mmol KIO3 reacting (1:6) with Thio: 6*2.65 = 15.9 mmol sodium thiosulfate. This is in 16.25 ml, so the molarity is 15.9 mmol / 16.25 == 0.978 M thiosulfate
What is the function of boric acid in Kjeldahl method?
Boric acid (H3BO3 or HBO2.H2O) is added (in excess) to form a stable and soluble complex with the steam-distilled ammoniagas:NH3(g) + HBO2.H2O(aq) --> NH3.HBO2(aq) + H2Owhich then can be titrated directly with 0.05M sulfuric acid till pH = 5:2 NH3.HBO2(aq) + H2SO4(aq) --> 2 NH4+ + HBO2.H2O(aq) + SO42-Note: Boric acid (HBO2.H2O) is a very weak acid pKa=9.3 and is not interfering with the acid/base titration of ammonia.
A certain amount of hydrogen peroxide was dissolved in 100 ml of water and then titrated with 1.68m kmno4 how much h2o2 was dissolved if the titration required 22.3 ml of the kmno4 solution?
Mass of H2O2 = 0.637 g
What happens when silver nitrate is titrated against potassium chloride?
It looks translucent.
Can 2 metals be titrated?
Cations can be titrated.
Can oxalic acid be titrated by HCl?
No; acids can be titrated with bases.
International number system?
titrated
What does completely titrated mean?
Completely titrated means it reached the stoichiometric point (usually pH=7). Simply means neutralized.
Why you use oxalate potassium in formol titration?
In formol titration, amino acids with formaldehyde are titrated with NaOH to measure the amount of amino acids in the solution. Potassium is also necessary for this titration and is supplied by using potassium oxalate. If calcium is present, it will react with the NaOH to form Ca(OH)2. This will make it appear to need more of the NaOH solution (and overestimate the titration). Potassium oxalate will chelate the calcium, and prevent it from reacting (forming calcium oxalate).
What is the number of equivalents of H2C2O4.2H2O titrated?
h2c2o2.2h2o
What is the difference between aqueous and non aqueous titration?
Aqueous titration: the ion to be titrated is in an aqueous solution Nonaqueous titration: the ion to be titrated is in an nonaqueous solution
What is the principle of BOD?
when magnesium sulfate and potassium hydroxide is added,magnesium hydroxide is formed and precipitates and conc H2SO4 is added and in presence of oxygen the preciptate turns brown color which can be measured by idoine and starch indicator titrated against sodium thiosulfate
NH3 is titrated with HCl which indicator is suitable?
methylorange
Can vitamin c be titrated out of orange juice?
yes.
