REDOXEQU Ac Alk new - Contents
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Balancing equations for redox reactions using the half equation method. Examples include some in acidic and some in alkaline solution.
Page 1
In acid - Review
Describes the method for balancing half equations in acidic solution
23 marks
Page 2
Reaction 1
Dichromate ion (Cr
2
O
7
2–
) with Fe
2+
in acidic aqueous solution to give Fe
3+
and Cr
3+
22 marks
Page 3
Reaction 2
Iodate anion (IO
3
–
) reacts with iodide ion to give iodine (I
2
)
25 marks
Page 4
Reaction 3
permanganate ion (MnO
4
–
) reacts with H
2
O
2
in acidic aqueous solution to give Mn
2+
and O
2
.
Page 5
In alkali - Review
Describes a method that can be used to balance half equations in alkaline solution
6 marks
Page 6
Reaction 4
In aqueous alkaline solution Pb(OH)
3
–
(
aq
) reacts with OCl
–
(
aq
) to give PbO
2
(
s
) and Cl
–
(
aq
)
30 marks
Page 7
Reaction 5
Chromium(III) exists as Cr(OH)
6
3–
in aqueous alkaline solution. This ion reacts with H
2
O
2
to give CrO
4
2–
.
24 marks
Page 8
Balancing equations for reactions in alkali