Use the same balance for all weighings of the same sample 3. Results, Discussion, Conclusion: In this experiment, we started off with the crucible with the simple that weighed 31.7562 g. Obtain a sample of potassium chlorate, KClO3 , as directed by your instructor. Procedure: 1.The mass of the crucible and the cover was measured. 3.The mass of the crucible, cover and KClO3 was measured. It is used in safety matches, explosives, as an oxidizing agent, to prepare oxygen, and as a disinfectant. Chemistry: Lab - % Composition of a Hydrate Introduction: Salt Compounds that contain water molecules attached are called hydrates, or hydrated salts. Percent Composition Hydrogen: 100 11.1% 18.0 2.0 × = g g 4. 2.KClO3 was added to the crucible. At the end of the lab is an example page of how to do the calculations on page 22 after you have completed the data. 1 Expert Response The decomposition of the potassium chlorate laboratory responds to a study on the mechanism of catalytic action of manganese dioxide on the decomposition of Heat gently for 8 minutes, then strongly for 10 minutes. Thermal decomposition of potassium chlorate lab report Beshoy S. Asked 08/03/17 How many grams of O2 can be prepared from the decomposition of 4.50 grams of potassium chlorate? 2. LAB REPORT 5 1-Report-percent Composition of Potassium Chlorate in a mixture of potassium Chlorate and Potassium Chloride. composition of hydrates lab answers, LAB % COMPOSITION OF A HYDRATE.docx. The oxygen will be released into the atmosphere and the remaining KCl can be measured to determine the change in mass. Chemistry. Determine the percent composition of oxygen in potassium chlorate, KClO 3 • Potassium = K = 39.1 g • Chlorine = Cl = 35.5 g If i have 12 grams of potassium chlorate dissolved in 100g of water at 65 celsius how much would i need to make the solution saturated . Now % of K = 39 x 100/122.5 = 31.84 % of Cl = 35.5 x 100/122.5 = 28.98 % of O = 48 x 100/122.5 = 39.18 Print out this page also. 6. Hi, I'm doing a chem lab of the Percent Composition of Potassium Chlorate-A Gas Law Experiment and we need to calculate the percent of KClO3 in the sample volumetrically and gravimetrically. Show your work! Place about 1.5 g of KClO3 in the weighed crucible, and reweigh. Molar mass of KClO3 = 122.5. Sample Formal Lab Write-up Your name Title: Decomposition of potassium chlorate (KClO 3) Purpose: This lab will demonstrate the decomposition (breakdown) of KClO 3 into KCl solid and O 2 gas when heated. % Composition By Mass of Oxygen in Potassium Chlorate Objective: The purpose of this lab was to calculate the percent composition by mass of oxygen in potassium chlorate. Experiment 6: Percent Composition, Lets begin writng the themical reactions that were carried out in this lab In Part A of this lab, potassium chlorate was Experiment 6 - ViDeX Percent Composition report writing_ Class play 17.1557 g. 19.5967 g. 18.5869 18.5848 DATA & CALCULATIONS Part A: Decomposition of Potassium Chlorate Reaction Use the balanced equation and your values of α (the mass of oxygen lost), β (the molar mass of oxygen) and δ (the molar mass of potassium chlorate) to determine the mass of potassium chlorate present in the original mixture (this is the KClO 3 that decomposed in this experiment and is represented by λ, below, in the equation.) Potassium chlorate contains potassium, chlorine, and oxygen. Place the crucible with KClO3 on a clay triangle and set the cover slightly ajar. 4. The Composition of Potassium Chlorate Part A: Mass Percent of Oxygen in Potassium Chlorate Experimental Data Sample 1 2418 (a) Mass of crucible + lid (b) Mass of crucible, lid+ KCIO (c) Mass of crucible, lid+ residue after 1" heating (d) Mass of crucible, lid + residue after 2d heating 13.048 13, o 니69.