WebQ27. 1 gm sample of KClO3 was heated under such conditions that a part of it decomposed according to the equation (1) 2KClO3 2 KCl + 3O2 and remaining underwent change according to the equation. (2) 4KClO3 3 KClO4 + KCl If the amount of O2 evolved was 146.8 ml at S.T.P., calculate the % of weight of KClO4 in the residue. Q28. WebSolution: Preliminary steps The given problem is based on catalytic decomposition of KClO3 On heating KClO3 in the presence of catalyst MnO2 (39.84g) Step 1- write the balanced equation for the chemical …
Potassium Chlorate (KClO3) - Structure, Molecular mass, …
WebA sample of a mixture of KClO3 and KCl weighs 5.454 grams. When it is heated several times, the final mass of the mixture weighs 4.348 grams. The reaction that occurs is the loss of O2(g) to the air from KClO3 producing KCl. The unbalanced equation is shown below. What is the weight/weight percent of the KClO3 in the mixture? KClO3 → KCl + O2 WebTherefore, the weight percentage of KClO3 in the sample is 55.8%. 8. To solve this problem, we need to use both the ideal gas law and van der Waals's equation to calculate the pressure expected for 25 mol of CHF gas in a 5.00-L container at 75 °C. note to new grandparents
There are 367.5 gram KClO3 (M= 125.5) when heated. How
WebClick here👆to get an answer to your question ️ 1.0 g sample of KClO3 was heated under such conditions that a part of it decomposed according to the equation: 2KClO3→ 2KCl … WebJul 18, 2015 · First, determine the number of moles by using the mole ratio that exists between potassium chlorate and oxygen gas 0.01864cancel("moles"O_2) * (color(green)(2)" moles "KClO_3)/(color(orange)(3)" moles "O_2) = "0.01243 moles" KClO_3 The mass of the compound before decomposition was 0.01243cancel("moles") * "122.55 … WebAnswer: So the balanced equation is: 2KClO3 → 2KCl + 3O2 This means that every 2 moles of KClO3 will decompose into 2 moles of KCl and 3 moles of oxygen gas. Not sure about the M = 125.5 part. if you are using this abbreviation to mean the mass, when I use the periodic table, I calculate the m... note to new daughter in law