Topic: Why is standard reduction potential for Mn3+ to Mn2+ so big? (Read 6396 times)

user1000 · « **on:** November 13, 2014, 06:20:51 AM »

Can someone explain this?

Thanks

Irlanur · « **Reply #1 on:** November 13, 2014, 06:26:06 AM »

whats the electronic configuration in the two species? which one do you expect to be more stable?

user1000 · « **Reply #2 on:** November 13, 2014, 07:08:15 AM »

Quote from: Irlanur on November 13, 2014, 06:26:06 AM

whats the electronic configuration in the two species? which one do you expect to be more stable?

Is Mn2+ more stable because it has both d orbital energy levels half filled while mn3+ does not?

Irlanur · « **Reply #3 on:** November 13, 2014, 02:51:50 PM »

both?

darayoush · « **Reply #4 on:** November 14, 2014, 03:06:54 PM »

but i think oxidation of Mn2+ to Mn3+ must be large.because Mn2+ is d5 and is half full.but Mn3+ is lower than half and Mn prefer the stable form.

kriggy · « **Reply #5 on:** November 14, 2014, 03:38:54 PM »

Yea its quite high
Mn3+(aq) + e- → Mn2+(aq) +1.51

But the form it prefers also depends on other factors. I mean, this redox reaction is going like all the time at biological conditions without much trouble

Topic: Why is standard reduction potential for Mn3+ to Mn2+ so big? (Read 6396 times)

user1000

Why is standard reduction potential for Mn3+ to Mn2+ so big?

Irlanur

Re: Why is standard reduction potential for Mn3+ to Mn2+ so big?

user1000

Re: Why is standard reduction potential for Mn3+ to Mn2+ so big?

Irlanur

Re: Why is standard reduction potential for Mn3+ to Mn2+ so big?

darayoush

Re: Why is standard reduction potential for Mn3+ to Mn2+ so big?

kriggy

Re: Why is standard reduction potential for Mn3+ to Mn2+ so big?

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