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प्रश्न
Complete the following reaction and justify that it is a disproportionation reaction:
\[\ce{3MnO^{2-}4 + 4H^+ -> \underline{}\underline{}\underline{}\underline{} + \underline{}\underline{}\underline{}\underline{} + 2H2O}\]
उत्तर
\[\ce{3MnO^{2-}4 + 4H^+ -> 2MnO^-4 + MnO2 + 2H2O}\]
This is a disproportionation reaction since the same element [Mn] is oxidised and reduced in this process.
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संबंधित प्रश्न
How would you account for the following : Transition metals form coloured compounds
|
`E_((M^(2+)/M)` |
Cr | Mn | Fe | Co | Ni | Cu |
| -0.91 | -1.18 | -0.44 | -0.28 | -0.25 | -0.34 |
From the given data of E0 values, answer the following questions :
(1) Why is `E_(((Cu^(2+))/(Cu)))` value exceptionally positive
(2) Why is `E_(((Mn^(2+))/(Mn)))` value is highly negative as compared to other elements
(3) Which is the stronger reducing agents Cr2+ or Fe2+ ? Give Reason.
What are the characteristics of the transition elements and why are they called transition elements?
Following are the transition metal ions of 3d series:
Ti4+, V2+, Mn3+, Cr3+
(Atomic numbers: Ti = 22, V = 23, Mn = 25, Cr = 24)
Answer the following:
1) Which ion is most stable in an aqueous solution and why?
2) Which ion is a strong oxidising agent and why?
3) Which ion is colourless and why?
Dissociation of H2S is suppressed in acidic medium.
Maximum magnetic moment is shown by ____________.
Why does copper not replace hydrogen from acids?
Ionisation enthalpies of Ce, Pr and Nd are higher than Th, Pa and U. Why?
Which of the following ions acts as a typical transition metal ion?
Explain the use of different transition metals as catalysts.
