2H2O ==> O2 + 4H^+ 4e
H^+ + Cr2O7^-2 + 6e ==> 2Cr^+3 + 7H2O
You can add the phases. Check my work.
Enter the balanced chemical equation including states that describes the electrochemical cell that is represented by the cell notation as shown.
Pt(s) l H2O(l) l O2(g) l H+(aq) ll H+(aq), Cr2O72-(aq), Cr3+(aq) l Pt(s)
3 answers
Okay so the problem I had with this is like...I did't understand that when it was written say on the left of the double vertical line how you know
H2O --> O2 + H+
will it always be written in the order of how you write the reaction? or like could you also right it like
O2 + H+ --> h2o
or basically how do you know which species (H2), O2, and H+ are on the reactant/product side?
H2O --> O2 + H+
will it always be written in the order of how you write the reaction? or like could you also right it like
O2 + H+ --> h2o
or basically how do you know which species (H2), O2, and H+ are on the reactant/product side?
also shouldn't it be the coefficient of H^+ in the second equation be 14?
4 answers