Advertisements
Advertisements
प्रश्न
Transition metals can act as catalysts because these can change their oxidation state. How does \[\ce{Fe(III)}\] catalyse the reaction between iodide and persulphate ions?
Advertisements
उत्तर
Reaction between iodide and persulphate ions is:
\[\ce{2I^{-} + S2O^{2-}8 ->[Fe(III)] I2 + 2SO^{2-}4}\]
Role of \[\ce{Fe(III)}\] ions:
\[\ce{2Fe^{3+} + 2I^{-} -> 2Fe^{2+} + I2}\]
\[\ce{2Fe^{2+} + S2O^{2-}8 -> 2Fe^{3+} + 2SO^{2-}4}\]
APPEARS IN
संबंधित प्रश्न
Why +2 oxidation state of manganese is more stable?
How is the variability in oxidation states of transition metals different from that of the non-transition metals? Illustrate with examples.
The transition metals show _________ character because of the presence of unpaired· electrons and Cu+ is ____________ because of its electronic configuration is [Ar]3d10
The paramagnetic character in the 3d-transition series elements increases up to Mn and then decreases.
Transition metals with lowest melting point is ______.
Out of \[\ce{Cu2Cl2}\] and \[\ce{CuCl2}\], which is more stable and why?
A solution of \[\ce{KMnO4}\] on reduction yields either a colourless solution or a brown precipitate or a green solution depending on pH of the solution. What different stages of the reduction do these represent and how are they carried out?
EΘ of Cu is + 0.34V while that of Zn is – 0.76V. Explain.
Assertion: \[\ce{Cu^2+}\] iodide is not known.
Reason: \[\ce{Cu^2+}\] oxidises \[\ce{I^-}\] to iodine.
On strong heating AgNO3, the gases evolved are:-
Mercury is the only metal liquid at room temperature due to its:-
Which one of the following characters tie of the transition metal is associated with higher catalytic activity?
Agcl is soluble in NH4OH. The solubility is due to the information of:-
Account for the following:
Transition metals form alloys.
The number of terminal oxygen atoms present in the product B obtained from the following reactions is:
\[\ce{FeCr2O4 + Na2CO3 + O2 -> A + Fe2O3 + CO2}\]
\[\ce{A + H^+ -> B + H2O + Na^+}\]
Which of the following characteristics of transition metals is associated with their catalytic activity?
What is the oxidation state of chromium in chromate ion and dichromate ion?
Describe the oxidising action of potassium dichromate and write the ionic equation for its reaction with iron (II) solution.
