1. Determine the oxidation state for all elements in the following molecules 2. Complete the reduction and oxidation equation and write the redox equation in the following examples 3. Complete the equation and indicate the standard reduction potential Ered assuming both reac-tions partners are used in the same concentration. 4. Calculate E for the following redox pair
Exercises
1. Determine the
oxidation state for all elements in the following molecules:
(a)
H2O
(b)
NaCl
(c)
H2O2
(d)
Fe2O3
(e)
MnO4−
(f)
Cr2O72−
(g)
SiH4
2. Complete
the reduction and oxidation equation and write the redox equation in the
following examples:
(a) MnO4− + Fe2++
???? → Mn2+
+ Fe3++ ?????? under acidic conditions
(b) MnO4− + Br−
+ OH− → ??? + BrO3− under basic conditions
(c) Cr2O72− +
Cu+ → Cu2++ ??? under acidic conditions
(d) IO3− + I−
→ I2
under acidic conditions
3. Complete
the equation and indicate the standard reduction potential Ered
assuming both reac-tions partners are used in the same concentration.
(a) Br2 + 2I− → ???? E0(Br2∕Br−)
= 1.07 V
E0(I2∕I−)
= 0.54V
(b) Fe2+ + Ce4+ → ???? E0(Ce4+∕Ce3+)
= 1.61 V
E0(Fe3+∕Fe2+)
= 0.77 V
(c) Br2 + Fe → ???? E0(Br2∕Br )=107V
E0(Fe2+∕Fe)
= −0.44 V
4. Calculate
E for the following redox pair when
Mn3+= 0.5 M and Mn2+ = 0.01 M [E0(Mn3+/Mn2+) = 1.51 V] using the Nernst equation.
Related Topics
TH 2019 - 2025 pharmacy180.com; Developed by Therithal info.