Find the half Reaction
a) OX Pb + SO4^2- --> PbSO4
b) OX: PbO2 + SO4^2- --> PbSO4
c) OX: Pb +SO4^2- --> PbSO4 + 2 e-
d) OX: Pb + PbO2 --> PbSO4
a) OX: Pb + SO4^2- --> PbSO4 + 2 e-
b) RED: PbO2 + 4 H+ + SO4^2- + 2 e- --> PbSO4 + 2 H2O
c) OX: Pb + SO4^2- --> PbSO4 + 2 e-
d) OX: Pb + PbO2 --> PbSO4
which one is a half reaction
A half reaction is an oxidation or reduction reaction that shows the transfer of electrons.
Based on the given options:
a) OX: Pb + SO4^2- --> PbSO4 + 2 e- is a half reaction because it shows the oxidation of Pb to PbSO4 and the transfer of 2 electrons.
b) RED: PbO2 + 4 H+ + SO4^2- + 2 e- --> PbSO4 + 2 H2O is a half reaction because it shows the reduction of PbO2 to PbSO4 and the transfer of 2 electrons.
c) OX: Pb + SO4^2- --> PbSO4 + 2 e- is a half reaction because it shows the oxidation of Pb to PbSO4 and the transfer of 2 electrons.
d) OX: Pb + PbO2 --> PbSO4 is not a half reaction because it does not indicate the transfer of electrons.