balance I2 +cl2+H2O__IO3^-+cl^-H^+ using alf reaction method
Answers
Answer:
The unbalanced redox equation is as follows:
Cl
2
+IO
3
−
+OH
−
→IO
4
−
+Cl
−
+H
2
O
Balance all atoms other than H and O.
Cl
2
+IO
3
−
+OH
−
→IO
4
−
+2Cl
−
+H
2
O
The oxidation number of Cl changes from 0 to -1. The change in the oxidation number of Cl is 1. The total change in the oxidation number for 2 Cl atoms is 2.
The oxidation number of I changes from 5 to 7. The change in the oxidation number of I is 2.
The increase in the oxidation number is balanced with the decrease in the oxidation number.
O atoms are balanced by adding 1 water molecule on LHS.
Cl
2
+IO
3
−
+OH
−
+H
2
O→IO
4
−
+2Cl
−
+H
2
O
Cl
2
+IO
3
−
+OH
−
→IO
4
−
+2Cl
−
To balance H atoms, add 1 H
+
on RHS.
Cl
2
+IO
3
−
+OH
−
→IO
4
−
+2Cl
−
+H
+
Since the reaction occurs in basic medium, add 1 hydroxide ions on both sides of the equation.
Cl
2
+IO
3
−
+2OH
−
→IO
4
−
+2Cl
−
+H
+
+OH
−
On RHS, 1 H
+
ions combine with 1 OH
−
ions to form 1 water molecule.
Cl
2
+IO
3
−
+2OH
−
→IO
4
−
+2Cl
−
+H
2
O
This is the balanced chemical equation.