a basic redox qn

• WQing

  31 Dec 13, 05:24

  http://www.glencoe.com/qe/scienceOLC.php

  Qn 11 (in the above website): my answer is C and the correct answer is D.

  Please explain O.O

  Thanks!

• WQing

  31 Dec 13, 05:34

  sorry the website should be http://www.glencoe.com/qe/scienceOLC.php?qi=6358

• UltimaOnline

  31 Dec 13, 09:12

  Originally posted by WQing:

  http://www.glencoe.com/qe/scienceOLC.php

  Qn 11 (in the above website): my answer is C and the correct answer is D.

  Please explain O.O

  Thanks!

   

  H2O2 is reduced to H2O, with the OS of its O atoms reduced from -1 to -2.

  O- species is not even present in the reaction (as either a reactant or a product), and is therefore irrelevant.

• WQing

  31 Dec 13, 09:25

  thanks!! so the answer key is wrong?

• UltimaOnline

  31 Dec 13, 10:20

  Originally posted by WQing:

  thanks!! so the answer key is wrong?

  
  If the answer key says O-, then obviously it's wrong. The answer should be H2O2.