Question

How to balance the decomposition of potassium chlorate

Answer 1

Answer:
2KClO
3
(
s
)
+ heat
→
2KCl(s)
+
3O
2
(
g
)
Explanation:
KClO
3
(
s
)
+ heat
→
KCl(s)
+
O
2
(
g
)
Notice that the number of atoms of
K
and
Cl
are the same on both sides, but the numbers of
O
atoms are not. There are 3
O
atoms on the the left side and 2 on the right. 3 and 2 are factors of 6, so add coefficients so that there are 6
O
atoms on both sides.
2KClO
3
(
s
)
+ heat
→
KCl(s)
+
3O
2
(
g
)
Now the
K
and
Cl
atoms are not balanced. There are 2 of each on the left and 1 of each on the right. Add a coefficient of 2 in front of
KCl
.
2KClO
3
(
s
)
+ heat
→
2KCl(s)
+
3O
2
(
g
)
The equation is now balanced with 2
K
atoms, 2
Cl
atoms, and 6
O
atoms on both sides.
11

Answer 2

This is the required equation...... 2kClO3 ---> 2kCl + 3O2