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Why is potassium permanganate used in titration experiment despite being a secondary standard solution?
kmno4 is very good oxidizing agent. that means it is easily reduced by any other reagent. so it can't be considered as primary standard as its concentration changes upon free leaving
What is the name of Mn(NO3)3?
The name of the polyatomic ion MN04 is permanganate. This type of solution is stable in neutral or slightly alkaline and is purple in color.
Is potassium manganate and potassium permanganate the same?
Potassium manganate = K2MnO4 Potassium permanganate = KMnO4 It is important to quote the oxidation state of the compound. Potassium manganate could easily be potassium manganate (VI) as opposed to potassium manganate (VII) KMnO4 Potassium manganate (VI) K2MnO4 is a dark green compound made by fusing manganese (IV) oxide with potassium hydroxide. It is stable in basic solution In aqueous acidic solution it disproportionates to the manganate (VII) ion and manganese (IV) oxide.
What is a lyophillic solution?
A lyophillic solution is a type of colloidal solution where the dispersed particles are strongly solvated; in this case the solution is more stable.
Will strontium hydroxide react with carbon dioxide?
Strontium belongs to alkaline earth metalswhich form the stable carbonates so when carbon dioxide is added to aqueous solution of strontium hydroxide white ppts. of strontium carbonate are formed. Sr(OH)2+ CO2 = SrCO3 + H2O
Why is permanganate not a primary standard?
aqueous solutions are not stable for long
Why is potassium permanganate used in titration experiment despite being a secondary standard solution?
kmno4 is very good oxidizing agent. that means it is easily reduced by any other reagent. so it can't be considered as primary standard as its concentration changes upon free leaving
What does xenic mean?
-noun Chemistry. Xenic acid is the aqueous solution of xenon trioxide, a stable weak acid and strong oxidizing agent.
What is the name of Mn(NO3)3?
The name of the polyatomic ion MN04 is permanganate. This type of solution is stable in neutral or slightly alkaline and is purple in color.
Is potassium manganate and potassium permanganate the same?
Potassium manganate = K2MnO4 Potassium permanganate = KMnO4 It is important to quote the oxidation state of the compound. Potassium manganate could easily be potassium manganate (VI) as opposed to potassium manganate (VII) KMnO4 Potassium manganate (VI) K2MnO4 is a dark green compound made by fusing manganese (IV) oxide with potassium hydroxide. It is stable in basic solution In aqueous acidic solution it disproportionates to the manganate (VII) ion and manganese (IV) oxide.
When the ionic compound Kl is dissolved what attraction pulls l ions into solution?
When I- ions are merged with iodine molecules, a complex of I3- is formed which is stable in an aqueous medium.
Is a nitrate aqueous or solid?
Nitrates are salts and generally form stable solids, they are generally soluble and form aqueous solutions.
Is a solution stable or unstable?
unstable
Why pottasium permanganate solution kept for few days?
The permanganate solution has to cool and stand overnight before it can be filtered to remove MnO2 (manganese dioxide)Potassium permanganate is not a primary standard. It is difficult to obtain the substance perfectly pure and completely free from manganese dioxide. Moreover, ordinary distilled water is likely to contain reducing substances (traces of organic matter, etc.) which will react with the potassium permanganate to form manganese dioxide. The presence of the latter is very objectionable because it catalyses the auto-decomposition of the permanganate solution on standing. The decomposition:4MnO4- + 2H2O = 4MnO2+3O2+4OH-is catalysed by solid manganese dioxide. Permanganate is inherently unstable in the presence of manganese(II) ions:2MnO4-+3Mn2+ +2H2O = 5MnO2 + 4H+;this reaction is slow in acid solution, but is very rapid in neutral solution. For these reasons, potassium permanganate solution is rarely made up by dissolving weighed amounts of the highly purified (e.g., A.R.) solid in water; it is more usual to heat a freshly prepared solution to boiling and keep it on the steam bath for an hour or so, and then filter the solution through a non-reducing filtering medium, such as purified glass wool or a sintered glass filtering crucible (porosity No. 4).Alternatively, the solution may be allowed to stand for 2-3 days at room temperature before filtration. The glass-stoppered bottle or flask should bc carefully freed from grease and prior deposits of manganese dioxide: this may be done by rinsing with dichromate-sulphuric acid cleaning mixture and then thoroughly with distilled water. Acidic and alkaline solutions are less stable than neutral ones. Solutions of permanganate should be protected from unnecessary exposure to light; a dark-coloured bottle is recommended. Diffuse daylight causes no appreciable decomposition, but bright sunlight slowly decomposes even pure solutions.
How you can find the oxidation number for Ni?
Nickel is in the d block. Ni shows +3 as the highest.
What is lyophillic solution?
A lyophillic solution is a type of colloidal solution where the dispersed particles are strongly solvated; in this case the solution is more stable.
What is a lyophillic solution?
A lyophillic solution is a type of colloidal solution where the dispersed particles are strongly solvated; in this case the solution is more stable.
