Conclusion: wear safety equipment and stand well back! Sodium in oxygen tends to form sodium peroxide, Na2O2 in addition to Na2O, and potassium in oxygen tends to form potassium superoxide, KO2 (not dioxide, as this implies a 2- charge for the O), peroxide, and maybe some oxide. The experimental results will be compared to the theoretical percentage calculated from the formula KClO 3. To balance the chemical equation, the number of atom must be same at both side. General. Formula for Oxygen gas as molecule is O_2. The only elements present are potassium, hydrogen and oxygen. Formula for Potassium chloride is KCl. Potassium chlorate is KClO3 Potassium chloride is KCl Oxygen is of course O2 So you get KClO3 > KCl + O2 (sorry, can't find how to put an arrow for the equation so I used > Now, you need to check the balancing, If you add up the K, Cl and O on each side, you have 3 oxygen atoms on the left side and only 2 on the right hand side. K + O2(g) = KO2 ΔG(20C) = -241.3kJ ΔH(20C) = -283.7kJ This reaction is spontaneous (ΔG negative), and HIGHLY exothermic (ΔH is highly negative). 2 KClO 3(s) →2 KCl (s) + 3 O 2 (g) The purpose of this experiment is to determine the percentage of oxygen in potassium chlorate. Now, balancing the equation, it comes to be : 2KClO_3 rarr 2KCl + 3O_2uarr. The Reactions with Air or Oxygen . a. solid potassium and oxygen gas react to form potassium oxide. Reaction is : KClO_3 rarr KCl + O_2uarr. Identify an equation for the following reactions, balance each, and give the reaction type. Error: Some elements or groups in the products are not present in the reagents: Potassium, Oxygen Error: Some elements or groups in the reagents are not present in the products: K, O Error: equation K+O2=PotassiumOxygen is an impossible reaction Please correct your reaction or click on one of the suggestions below: K + O2 = K2O K + O2 = KO2 If you mean just potassium hydroxide or its aqueous solution, then no, because their are no chlorine atoms present. Formula for Potassium chlorate is KClO_3. This page mainly looks at the reactions of the Group 1 elements (lithium, sodium, potassium, rubidium and caesium) with oxygen - including the simple reactions of the various kinds of oxides formed. Reaction is 2KClO_3 rarr 2KCl + 3O_2uarr. The thermal decomposition of potassium chlorate is described by the equation . It also deals very briefly with the reactions of the elements with chlorine. :. The mixture of products would likely depend on the partial pressure of oxygen in the gas mixture. ! Note that in all of these compounds, the K has a charge of 1+.