Classifying reactions?
Based on relative bond strengths, classify these reactions as endothermic (energy absorbed) or exothermic (energy released).
AB+C --> AC+B
A+ BC --> AB + C
A2+C2 --> 2AC
B2+C2 --> 2BC
A2+B2 --> 2AB
* Strongest Bond *
A-B
A-A
B-B
C-C
B-C
A-C
Weakest Bond
Based on relative bond strengths, classify these reactions as endothermic (energy absorbed) or exothermic (energy released).
AB+C --> AC+B
A+ BC --> AB + C
A2+C2 --> 2AC
B2+C2 --> 2BC
A2+B2 --> 2AB
* Strongest Bond *
A-B
A-A
B-B
C-C
B-C
A-C
Weakest Bond
1 Answer
Feb 24, 2018
- Endothermic
- Exothermic
- Endothermic
- Endothermic
- Exothermic
Explanation:
The stronger the bond, the more the energy required to break it, similarly the stronger the bond formed, the more energy released.
1.A-B, being a strong bond requires more energy to break it then, the formation of the weak bond of AC which releases very little energy, so the reaction is relatively endothermic, as more energy is absorbed than given off.
A similar logic can be applied to all 5.
