Question

Balance the following equation. Then determine the ratio for the products KCl and O2 generated during the decomposition of potassium chlorate.

KClO3 KCl + O2

Answer 1

Answer : The balanced chemical reaction is,

`2KClO_3\rightarrow 2KCl+3O_2`

The ratio for the products
`KCl` and
`O_2` generated during the decomposition of potassium chlorate are, 2 : 3 respectively.

Explanation :

The unbalanced chemical reaction is :

`KClO_3\rightarrow KCl+O_2`

This reaction is an unbalanced reaction because the number of atoms of oxygen present on left hand side are not equal to the right hand side of the oxygen.

In order to balance the chemical reaction, we put the coefficient 2 before the
`KClO_3`, the coefficient 2 before the
`KCl` and the coefficient 3 before the
`O_2`.

The balanced chemical reaction will be,

`2KClO_3\rightarrow 2KCl+3O_2`

The ratio between the
`KClO_3:KCl:O_2` are 2 : 2 : 3 respectively.

Therefore, the ratio for the products
`KCl` and
`O_2` generated during the decomposition of potassium chlorate are, 2 : 3 respectively.

Answer 2

Ok first to balance O we do it like this:
2KClO3 ---> KCl + 3O2
Then to balance K and Cl
2KClO3 ---> 2KCl + 3O2
So the ratio will be 2:3
Hope this helps a lot to you