Block D and F Elements Class 12th Chemistry Ncert Solutions Chemistry Class 12th

8.27 For M2+/M and M3+/M2+ systems the E V values for some metals are as follows: Cr 2+/Cr - 0.9V Cr 3 /Cr 2+ -0.4 V Mn2+/Mn -1.2V Mn3+/Mn2+ +1.5 V Fe2+/Fe -0.4V Fe3+/Fe2+ +0.8 V Use this data to comment upon:

(i) The stability of Fe3+ in acid solution as compared to that of Cr3+ or Mn3+

(ii) The ease with which iron can be oxidised as compared to a similar process for either chromium or manganese metal.

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Payal Gupta | Contributor-Level 10

8 months ago

8.27 (i) Reduction potential tells us the ease with which the Metal can get reduced, As E° for Cr³⁺/Cr²⁺ is negative (–0.4 V), this means that Cr³⁺ ions in solution cannot be reduced to Cr²⁺ ions i.e., Cr³⁺ ions are very stable. As a further comparison of E° values show that Mn³⁺ ions more readily t

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Chemistry Ncert Solutions Class 12th 2023

Chemistry Ncert Solutions Class 12th 2023

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