Take this reaction for example.
2Mno4- + 16H+ + 5H2SO3 + 5H2O --> 2Mn2+ 8H20 + 20H+ + 5SO42-
Okay, the reaction is balanced and I've cancelled out the electrons, but I haven't cancelled out the H20 molecules and the protons. For a 1 mark question, would I lose the 1 mark?
Are Marks lost for not cancelling out electrons/protons in ion-electron equations? Watch
- Thread Starter
- 29-09-2016 16:37
- 29-09-2016 17:16
Check the mark scheme, but I think that would (and definitely should) be a lost mark.
- 29-09-2016 20:36
It would lose the mark on OCR A papers.