Use what you know about Hess' Law to calculate (delta)H for the following reaction and select your answer from below. 2A(g) + 2B(g) - -> 2AB(g) Compound Standard Enthalpy of Formation (kJ/mole) A -150 B-75 AB 300 1050 kJ O O O O O 75 kJ -1050 kJ -75 kJ -525 kJ 525 kJ
Use what you know about Hess' Law to calculate (delta)H for the following reaction and select your answer from below. 2A(g) + 2B(g) - -> 2AB(g) Compound Standard Enthalpy of Formation (kJ/mole) A -150 B-75 AB 300 1050 kJ O O O O O 75 kJ -1050 kJ -75 kJ -525 kJ 525 kJ
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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Transcribed Image Text:**Hess' Law Calculation Exercise**
Use what you know about Hess' Law to calculate ΔH for the following reaction and select your answer from below.
**Reaction:**
2A(g) + 2B(g) -> 2AB(g)
**Compound Standard Enthalpy of Formation (kJ/mole):**
- A: -150 kJ/mol
- B: -75 kJ/mol
- AB: 300 kJ/mol
**Answer Choices:**
- 1050 kJ
- 75 kJ
- -1050 kJ
- -75 kJ
- -525 kJ
- 525 kJ
Use the standard enthalpy of formation values provided to apply Hess' Law and find the reaction enthalpy change, ΔH.
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