Given the following thermochemical data at 25°C and 1 atm pressure, 3/2 O2(g) + 2B(s) → B2O3(s); AH° =-1264 kJ; O3(g) + 2B(s) –→ B2O3(s); AH° = - 1406 kJ; determine AH° for the following reaction at 25°C and 1 atm pressure. 302(g) → 203(g) a. +284 kJ/mol b. -2670 kJ/mol C. -980 kJ/mol

Given the following thermochemical data at 25°C and 1 atm pressure, 3/2 O2(g) + 2B(s) → B2O3(s); AH° =-1264 kJ; O3(g) + 2B(s) –→ B2O3(s); AH° = - 1406 kJ; determine AH° for the following reaction at 25°C and 1 atm pressure. 302(g) → 203(g) a. +284 kJ/mol b. -2670 kJ/mol C. -980 kJ/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

Chapter6: Thermochemistry

Section: Chapter Questions

Problem 68E: In a coffee-cup calorimeter, 1.60 g NH4NO3 is mixed with 75.0 g water at an initial temperature of...

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Question

Given the following
thermochemical data at 25°C and
1 atm pressure,
3/2 O2(g) + 2B(s) → B2O3(s); AH°
=-1264 kJ;
O3(g) + 2B(s) –→ B2O3(s); AH° = -
1406 kJ;
determine AH° for the following
reaction at 25°C and 1 atm
pressure. 302(g) → 203(g)
a. +284 kJ/mol
b. -2670 kJ/mol
C. -980 kJ/mol
d. +980 kJ/mol
O e. -284 kJ/mol

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