**Predict whether the following reactions will be exothermic or endothermic.**- **Reaction A.** \( \text{N}_2(g) + 3\text{H}_2(g) \rightarrow 2\text{NH}_3(g) \)- **Reaction B.** \( \text{S}(g) + \text{O}_2(g) \rightarrow \text{SO}_2(g) \)- **Reaction C.** \( 2\text{H}_2\text{O}(g) \rightarrow 2\text{H}_2(g) + \text{O}_2(g) \)- **Reaction D.** \( 2\text{F}(g) \rightarrow \text{F}_2(g) \)**Bond Energies (\( \Delta H^\circ \) in kJ/mol):**| Bond | \( \Delta H^\circ \) (kJ/mol) ||------|---------------------|| H–H | 432 || N≡N | 942 || O=O | 494 || F–F | 155 || H–N | 386 || H–O | 459 || S=O | 522 |- **Which reaction(s) are endothermic?** - [ ] B - [ ] A - [ ] D - [ ] C- **Which reaction(s) are exothermic?** - [ ] C - [ ] A - [ ] B - [ ] D**Explanation:**To determine whether a reaction is exothermic or endothermic, compare the bond energies of the reactants and products. A reaction is exothermic if the energy of the bonds formed in the products is greater than the energy of the bonds broken in the reactants, releasing energy. Conversely, it is endothermic if it requires more energy to break the bonds in the reactants than is released when the products are formed.

The exothermic and endothermic nature of the reaction can be calculated by using the bond energy of…

Predict whether the following reactions will be exothermic Bond AH° (kJ/mol) or endothermic. Н-Н 432 Reaction A. N,(g) + 3 H, (g) 2 NH, (g) N=N 942 494 Reaction B. S(g) + O2(g) SO, (g) O=0 F-F 155 Reaction C. 2H,O(g) 2 H, (g) + 0,(g) Н-N 386 Reaction D. 2 F(g) → F,(g) Н-О 459 S=0 522 Which reaction(s) are endothermic? Which reaction(s) are exothermic? А D В

Predict whether the following reactions will be exothermic Bond AH° (kJ/mol) or endothermic. Н-Н 432 Reaction A. N,(g) + 3 H, (g) 2 NH, (g) N=N 942 494 Reaction B. S(g) + O2(g) SO, (g) O=0 F-F 155 Reaction C. 2H,O(g) 2 H, (g) + 0,(g) Н-N 386 Reaction D. 2 F(g) → F,(g) Н-О 459 S=0 522 Which reaction(s) are endothermic? Which reaction(s) are exothermic? А D В

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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