1. Determine the weight of KCIO3 heated. 2. Determine the weight of oxygen gas lost using the constant weight obtained from repeated heatings. 3. Based on the values obtained above, determine the experimental percent of oxygen in KCIO3 HINT: Percentage is defined as the "part" of interest divided by the total times 100. Determine the theoretical percent oxygen present in KCIO3 using stoichiometry. 4. 5. Based on the values obtained from #3 and #4, determine the percent error of percent oxygen.

1. Determine the weight of KCIO3 heated. 2. Determine the weight of oxygen gas lost using the constant weight obtained from repeated heatings. 3. Based on the values obtained above, determine the experimental percent of oxygen in KCIO3 HINT: Percentage is defined as the "part" of interest divided by the total times 100. Determine the theoretical percent oxygen present in KCIO3 using stoichiometry. 4. 5. Based on the values obtained from #3 and #4, determine the percent error of percent oxygen.

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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Question

Data Table 1: Pure Potassium Chlorate (KClO3) Sample (Test Tube #1)
Mass (g) Difference (g)
45.375g
46.374g
Weight of test tube + MnO₂
Weight of test tube + MnO₂ + KCIO3
Weight after 1st heating
Weight after 2nd heating
Weight after 3rd heating
Constant weight
46.006g
46.004g -.002g
46.006g
+.002g
46.005g

Test Tube #1: Pure KCIO3 Sample
1. Determine the weight of KCIO3 heated.
2.
Determine the weight of oxygen gas lost using the constant weight obtained from repeated
heatings.
3. Based on the values obtained above, determine the experimental percent of oxygen in KCIO3
HINT: Percentage is defined as the "part" of interest divided by the total times 100.
Determine the theoretical percent oxygen present in KCIO3 using stoichiometry.
4.
5. Based on the values obtained from #3 and #4, determine the percent error of percent oxygen.

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