25.015g 775225g Mass of 3.0% H2O2 solution Mass of H2O2 in 3.0% solution Moles H2O2 decomposed mol

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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How would I find moles of H2O2 decomposed using my data. Thank you!
record the highest temperature achieved.
3% = mass
surroundings.
9surr = (mass of reacted mixture) (specific heat) (A1)
D F-F
9 syst = - q surr
Mass of 3.0% H2O2 solution and cup 28.O
AH = q syst/mol H2Q2 decomposed
Mass of empty cup
3.035 g
25.015 g
:75225g
247
Mass of 3.0% H2O2 solution
Mass of H2O2 in 3.0% solution
Moles H2O2 decomposed
mol
Initial temperature
23.7
36.0
30.288
27.2538
°C
Final temperature
°C
Mass of reacted mixture & cup
Mass of reacted mixture
·AT
12.3
1402
- 1402
°C
4 sur
kJ
9 syst
kJ )
ΔΗ
kJ/mol
Questions:
1. The experimental value for AH you determined in part III is probably differe
the value predicted in the calculation in part II. Considering the experimental p
laboratory equipment and chemicals you used, provide as many explanations a
for the discrepancy.
2 By considering the states of the, reactants and products, what is the sign of t
change for this reaction? poS, TIve
Proce
Transcribed Image Text:record the highest temperature achieved. 3% = mass surroundings. 9surr = (mass of reacted mixture) (specific heat) (A1) D F-F 9 syst = - q surr Mass of 3.0% H2O2 solution and cup 28.O AH = q syst/mol H2Q2 decomposed Mass of empty cup 3.035 g 25.015 g :75225g 247 Mass of 3.0% H2O2 solution Mass of H2O2 in 3.0% solution Moles H2O2 decomposed mol Initial temperature 23.7 36.0 30.288 27.2538 °C Final temperature °C Mass of reacted mixture & cup Mass of reacted mixture ·AT 12.3 1402 - 1402 °C 4 sur kJ 9 syst kJ ) ΔΗ kJ/mol Questions: 1. The experimental value for AH you determined in part III is probably differe the value predicted in the calculation in part II. Considering the experimental p laboratory equipment and chemicals you used, provide as many explanations a for the discrepancy. 2 By considering the states of the, reactants and products, what is the sign of t change for this reaction? poS, TIve Proce
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