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Balance the following redox reaction in acidic conditions. What is the coeffici…
Related Topics
Wize University Chemistry Textbook > Electrochemistry
Balancing Redox Reactions
2 Activities
Balance the following redox reaction in acidic conditions. What is the coefficient on H
+
?
Cr
2
O
9
2
−
(aq)
+
HNO
2
(aq)
→
Cr
3
+
(aq)
+
NO
3
−
(aq)
{\small \text{Cr}_2\text{O}_9\ ^{2-}\text{(aq)} + \text{HNO}_2\text{(aq)} \rightarrow \text{Cr}^{3+}\text{(aq)} + \text{NO}_3\ ^-\text{(aq)}}
Cr
2
O
9
2
−
(aq)
+
HNO
2
(aq)
→
Cr
3
+
(aq)
+
NO
3
−
(aq)
2
3
5
8
10
I don't know
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More Balancing Redox Reactions Questions:
Electrochemistry: Redox
Balance the following redox reaction in basic solution:
Cr(OH)
3
+ Br
2
→ CrO
4
2-
+ Br
-
in basic solution
Electrochemistry: Redox
Balance the following redox reaction in an acidic solution.
HCOOH + MnO
4
- --> CO
2
+ Mn2+
Aqua regia is a mixture of concentrated HNO
3
and HCl developed to dissolve gold. The process is a redox reaction as follows:
A
u
(
s
)
+
N
O
3
(
a
q
)
−
+
C
l
(
a
q
)
−
→
A
u
C
l
4
(
a
q
)
−
+
N
O
2
(
g
)
Au_{(s)}+NO^-_{3(aq)}+Cl^-_{(aq)} \to AuCl^-_{4(aq)}+NO_{2(g)}
A
u
(
s
)
+
N
O
3
(
a
q
)
−
+
C
l
(
a
q
)
−
→
A
u
C
l
4
(
a
q
)
−
+
N
O
2
(
g
)
Balance this reaction under acidic conditions and identifying the oxidized and reduced species.
Thermodynamics: Work Done During Acid Digestion of Magnesium
A 10.0 g piece of Mg
(s)
is deposited in a container with a vast excess of HCl
(aq)
. A reaction takes place forming hydrogen gas and Magnesium Chloride.
a) Write a balanced chemical reaction for the transformation
b) Calculate the work done by the system as a consequence of the reaction, if P
ex
= 1.1 atm and T = 298.15 K. You may assume ideal behaviour.
Balance the following redox reaction in basic solution:
Cr(OH)
3
+ Br
2
--> CrO
4
2- + Br- in basic solution
Balance the following redox reaction in an acidic solution.
HCOOH + MnO
4
- --> CO
2
+ Mn2+
Electrochemistry: Balancing Redox Reactions (Basic)
Balance the following redox reaction under basic condition:
Sn(OH)
3
−
(aq) + Bi(OH)
3
(s) → Sn(OH)
6
2−
(aq) + Bi (s)
Balance the following redox reaction:
HBrO (aq) → Br
−
(aq) + O
2
(g) under acidic condition
Balancing Redox Reactions (Basic)
Balance the following redox reactions under basic condition:
Cl
2
(aq) → ClO
3
−
(aq) + Cl
−
(aq)
Sn(OH)
3
−
(aq) + Bi(OH)
3
(s) → Sn(OH)
6
2−
(aq) + Bi (s)
Balancing Redox Reactions (Acidic)
Balance the following redox reactions under acidic condition:
H
2
S (aq) + H
2
O
2
(aq) → S (s) (acidic solution)
P
4
(s) + NO
3
−
(aq) → H
3
PO
4
(aq) + NO (g) (acidic solution)
Consider the following unbalanced equation:
Zn (s) + NO
3
−
(aq) + H
+
(aq) → Zn
2+
(aq) + NH
4
+
(aq) + H
2
O (l)
Write the net ionic and complete molecular reaction
Redox Balance
Consider the unbalanced redox reaction shown below.
IO
3
−
(aq) + HSO
3
−
(aq)
→
I
−
(aq) + SO
4
2−
(aq) (in acidic solution)
When the equation is balanced with the smallest whole number coefficients, what is the coefficient of SO
4
2−
?