chemistry
posted by greentree .
1. If half cell A has a standard reduction potential of E= 1.10 V and half cell B has a standard reduction potential of E= 0.65 V, which halfcell is the anode?
2. Which half cell has the higher potential energy?
3. Calculate Ecell for this voltaic cell.

A + e ==> A^ Eo = 1.10vb
B + e ==> B^ Eo = 0.65v

For a spontaneous cell A must be reversed; therefore,
A^ ==> A + e E = 1.10
B + e ==> B^ E = 0.65

A^ + B ==> A + B^
Ecell = 1.10 + 0.65 = ?
The anode is where oxidation occurs and oxidation is the loss of electrons; therefore, A^ must be the anode.