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Compound Stoichiometry In A Compound

775 Words4 Pages

Percentage of Oxygen in a Compound: Stoichiometry and Catalysis
Jarling Perez
Carl Eguez
CHM1045L, U43
October 30,2015

Table of Contents:

Introduction………………………………………………………………………………………3
Procedure…………………………………………………………………………………………4
Results.……………………………………………………………………………………………5
Discussion…………………………………………………………………………………………8
References…………………………………………………………………………………………9

Introduction:

Stoichiometry refers to the quantitative relation between reactants and products during a chemical reactions. There are many ways in which this method can be used. For instance, if the initial reactant amount is given, this technique would help us determine the products formed or vice-versa. On the other side, heat can be used to decompose compounds, …show more content…

Consequently, it changed state of matter, from liquid, it solidified and turned to a dark green color once the gas evolved. On the other hand, on test tube #2 the mixture turned to a purple color and towards the end, it turned to a dark green color.
Data Analysis and Calculations
Test tube #1: Pure KCl Sample
1. Determine the weight of KCl heated?
Weight of KCl heated = (Weight of test tube + Mn+ KCl) – (Weight of test tube + Mn) = 46.428g – 45.490g = 0.938g
2. Determine the weight of oxygen gas lost using the constant weight obtained from repeated heatings?
Weight of oxygen gas lost = (Weight of test tube + Mn+ KCl) – (Constant weight) = 46.428g – 46.094g = 0.334g
3. Based on the values obtained above, determine the experimental percent of oxygen in KCl?
Experimental percent of oxygen in KCl= x 100% = x 100% =

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