Redox Y2 Flashcards
1
Q
reduction
A
- gain of electrons
- decrease in Ox number
2
Q
oxidation
A
- loss of electrons
- increase in Ox number
3
Q
How to balance half equations
A
- balance all species except for O+H
- Balance any O with H2O
- Balance any H with H+
- Balance charges with e- (put on most positive side)
4
Q
why don’t redox titrations with transition elements need an indicator
A
- TE are coloured depending on their Ox state
- you can spot the end point without an indicator
5
Q
why is excess H2SO4 added into the conical flask
A
- ensures you have sufficient H+ ions to allow the reduction of the OA
