how many grams of oxygen are produced in the decomposition of 5g of potassium chlorate???
i dont kno how to get that into the equation,,,, and then balance it... if u can please give it 2 me and explain how to solve it cuz im not sure if its how i think it is...
2007-03-21 07:39:27 · 2 answers · asked by xxlore09xx 1 in Science & Mathematics ➔ Chemistry
2KClO3 ===> 2KCl + 3O2
Atomic weights: K=39 Cl=35.5 O=16 KClO3=122.5
5gKClO3 x 1molKClO3/122.5gKClO3 x 3molO2/2molKClO3 x 32gO2/1molO2 = (5)(3)(32)/(122.5)(2) = 2.0gO2
The 5gKClO3 is given. The first factor comes from the mol. wt. of KClO3. The g KClO3 cancel, leaving moles KClO3. The second factor comesd from the balanced equation. The moles KClO3 cancel, leaving moles O2. The next factor comes from the mol. wt of O2. The moles O2 cancel, leaving g O2.
2007-03-21 07:47:39 · answer #1 · answered by steve_geo1 7 · 0⤊ 0⤋
Depends on the conditions.
2007-03-21 14:56:38 · answer #2 · answered by ag_iitkgp 7 · 0⤊ 0⤋