Question 1
What is the reduction half-reaction for the following overall cell reaction?
Ni2+(aq) + 2 Ag(s) → Ni(s) + 2 Ag+(aq)
◦ Ni
2+(
aq) + 2 e
- → Ni(
s)
◦ Ni
2+(
aq) + e
- → Ni(
s)
◦ Ag(
s) + e
- → Ag
+(
aq)
◦ Ag
+(
aq) + e
- → Ag(
s)
Question 2
The iron content of foods can be determined by dissolving them in acid (forming Fe
3+), reducing the iron(III) to iron(II), and titrating with cerium(IV):
Fe2+(aq) + Ce4+(aq) → Fe3+(aq) + Ce3+(aq).
Identify the two half-reactions in the above reaction.
◦
| oxidation half-reaction | reduction half-reaction |
| Fe2+(aq) + e-→ Fe3+(aq) | Ce4+(aq) → Ce3+(aq) + e- |
◦
| oxidation half-reaction | reduction half-reaction |
| Ce4+(aq) + e- → Ce3+(aq) | Fe2+(aq) → Fe3+(aq) + e- |
◦
| oxidation half-reaction | reduction half-reaction |
| Ce4+(aq) → Ce3+(aq) + e- | Fe2+(aq) + e- → Fe3+(aq) |
◦
| oxidation half-reaction | reduction half-reaction |
| Fe2+(aq) → Fe3+(aq) + e- | Ce4+(aq) + e- → Ce3+(aq) |
The titration curve of acetic acid
Amino acid chart
Acid Fast Stain
Summary of SOAP Note Content Cont.
Functional foods are being used by some health care professionals
Amino Acid Structure