he limiting reactant

Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter3: Chemical Reactions
Section: Chapter Questions
Problem 71QRT
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Metal piece conforms
to shape of nose
4. Potassium superoxide, KO2, is used in rebreathing gas masks to
generate oxygen:
Exhalation
Strap
4 KOH (aq) + 3 O2 (g)
ports
4 KO2 (s) + 2 H2O (I)
Suppose a reaction vessel contains 0.25 mol KO2 and 3.0 g H2O.
a) Determine the limiting reactant by calculating the moles of O2
that can be formed by each reactant.
From oxygen
source
b) Calculate the theoretical yield of O2 in grams.
c) If the reaction actually produces 4.7 g of O2, what is the percent yield?
Transcribed Image Text:Metal piece conforms to shape of nose 4. Potassium superoxide, KO2, is used in rebreathing gas masks to generate oxygen: Exhalation Strap 4 KOH (aq) + 3 O2 (g) ports 4 KO2 (s) + 2 H2O (I) Suppose a reaction vessel contains 0.25 mol KO2 and 3.0 g H2O. a) Determine the limiting reactant by calculating the moles of O2 that can be formed by each reactant. From oxygen source b) Calculate the theoretical yield of O2 in grams. c) If the reaction actually produces 4.7 g of O2, what is the percent yield?
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