Advertisements
Advertisements
प्रश्न
E0 value for Mn3+ Mn2+ couple is much more positive than that for Cr3-/ Cr2-.
Advertisements
उत्तर
Much larger 3rd ionisation energy of Mn (where the required change is d5 to d4) is mainly responsible for this.
Mn3+ = 
Mn2+ = 
→ Half filled (more stable)
APPEARS IN
संबंधित प्रश्न
Complete the following equation :
`2MnO_4^(-)+6H^++5NO_2^(-)rarr`
Complete the following equations : 2 MnO2 + 4 KOH + O2 →
Give an example and suggest a reason for the following feature of the transition metal chemistry:
The lowest oxide of transition metal is basic, the highest is amphoteric/acidic.
Write the chemical equation for the preparation of 4 KMnO from 2. MnO Why does purple colour of acidified permanganate solution decolourise when it oxidises Fe2- to Fe3+ ?
KMnO4 is coloured due to ______.
What is the effect of pH on dichromate ion solution?
Indicate the steps in the preparation of \[\ce{K2Cr2O7}\] from chromite ore.
Indicate the steps in the preparation of \[\ce{K2Cr2O7}\] from chromite ore.
Indicate the steps in the preparation of \[\ce{K2Cr2O7}\] from chromite ore.
Describe the preparation of potassium permanganate. How does the acidified permanganate solution react with SO2? Write the ionic equation for the reaction.
