order of half-reaction

Moderators: Chem_Mod, Chem_Admin

yoonjong_han_3F
Posts: 15
Joined: Wed Sep 21, 2016 2:55 pm

order of half-reaction

Postby yoonjong_han_3F » Sat Feb 11, 2017 9:06 pm

When writing a balanced equation for the cell reaction.
how should we do it?

I am guessing that it is Pt(s)I Neutral I Oxidized II Higher I reduced I Pt(s)

Also, when do we usually use pt?

yoonjong_han_3F
Posts: 15
Joined: Wed Sep 21, 2016 2:55 pm

Re: order of half-reaction

Postby yoonjong_han_3F » Sat Feb 11, 2017 9:11 pm

for instance, like homework 14.17???

Pt(s) l Fe +3, Fe +2 // H+ (aq), Mno4-, Mn+2 (aq) l pt(s)

Tycho_Meimban_2B
Posts: 31
Joined: Wed Sep 21, 2016 2:57 pm

Re: order of half-reaction

Postby Tycho_Meimban_2B » Sat Feb 11, 2017 10:24 pm

Two things to consider when writing the balanced equation for a cell reaction:

- have the oxidation be in the left, and the reduction on the right. The trend is that the element being oxidized is the anode, and that the element that is being reduced is the cathode.

- the elements that are aqueous be in the middle, next to the salt bridge, and that whatever is a solid be on the edges when writing this balanced equation.

Hope this helps!


Return to “Balancing Redox Reactions”

Who is online

Users browsing this forum: No registered users and 4 guests