Chemistry (12th Edition)

Published by Prentice Hall
ISBN 10: 0132525763
ISBN 13: 978-0-13252-576-3

Chapter 18 - Reaction Rates and Equilibrium - 18 Assessment: 121

Answer

2 KClO3 -> 2 KCl + 3 O2 1.91 g O2

Work Step by Step

First, write the unbalanced chemical equation with the correct chemical formulas and states. First, balance the oxygen atoms with coefficients of 2 for potassium chlorate and 3 for oxygen gas. This gives 6 oxygen atoms on both sides of the equation. Then balance the potassium and chlorine atoms with a coefficient of 2 for potassium chloride. The equation is now balanced. Use the molar mass of potassium chlorate, followed by a mole ratio, then followed by the molar mass of oxygen in order to find the number of grams of oxygen produced.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.