Given that
Which is the strongest reducing agent?
Zn
Cr
H2
Fe 3+
The oxidising agent in the following reactions is H2O2 + O3 → H2O +2O2
H2O2
O3
Both H2O2 and O3
Unpredictable
A substance that will reduce Ag+ to Ag but will not reduce Ni+2 to Ni is
Pb
Mg
AI
Given:E0Zn2+/ Zn = -0.76VE0Ag+/Ag = 0.80VWhich of the following reactions actually takes place?
Zn(s) + 2Ag+ (aq) → Zn2+ (aq)+ 2Ag(s)
Zn2+ (aq) + 2Ag(s) → Zn(s) + 2Ag+(aq)
Zn (s) + Ag(s) → Zn2+ (aq) + Ag+(aq)
Zn2+ (aq) + Ag(s) → Ag+ (aq) + Zn+ (aq)
In balancing the skeletal half - reaction S2O3 -2 → S(s) the number of electrons that must be added is
2 on the right
2 on the left
4 on the left
4 on the right
