Please answer the question in the photo When heated, KCIO, decomposes into KCl and O,.2 KCIO,→ 2 KCI + 3 0,If this reaction produced 14.4 g KCI, how many grams of O, were produced?gO,ESss

Answered: When heated, KCIO, decomposes into KCl…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Please answer the question in the photo

When heated, KCIO, decomposes into KCl and O,.
2 KCIO,
→ 2 KCI + 3 0,
If this reaction produced 14.4 g KCI, how many grams of O, were produced?
gO,
ESss

Expert Solution

Step 1

Solution

First you need to find the number of moles of KCl, you do this using
n = m/M (mole=mass / molecular weight)
n(KCl) = 14.4/ 74.45 = 0.193 moles

Now, using the chemical equation you see that the ratio between Potassium Chloride and Oxygen is 3:2.
So we times the number of moles of KCl by 3/2 (WANT over HAVE)

n(O2) = 0.193 x 3/2 = 0.2895moles
m(O2) = nM = 0.2895x 32 = 9.264g of O₂ is produced.

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