Question

<!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--> How is oxygen prepared from potassium chlorate?

Answer 1

<!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--> Potassium chlorate is used for laboratory preparation of oxygen as on heating, it releases oxygen gas.
Potassium chlorate decomposes, on heating, to form potassium chloride and oxygen. [1 mark]

$2KCl{O}_3\left(s\right)\to 2KCl\left(s\right)+3O_2\left(g\right)$ [1 mark]