Electrolysis of Lead (II) Bromide (PbBr2) Flashcards
1
Q
what forms at the anode
A
Br2, OH‾ ions
2
Q
what forms at the cathode
A
Pb, H+ ions
3
Q
how many electrons does each lead atom gain
A
2 electrons (Pb²+ + 2e‾ → Pb)
4
Q
how many electrons does each bromide ion lose
A
1 electron (2Br → Br₂ + 2e‾) it takes 2 bromide ions for 1 lead ion to gain two electrons
5
Q
ionic half equation for bromine
A
2Br → Br₂ + 2e‾
6
Q
ionic half equation for lead
A
Pb²+ + 2e‾ → Pb
7
Q
what is the electrolyte used
A
lead II bromide (aq)
