Question
C2H6+ energy → C2H4+H2
Which describes this reaction, endothermic or exothermic? Why?
A. This reaction is exothermic, because more energy is taken in than released
B. The reaction is endothermic, because more energy is released than taken in
C. The reaction is endothermic, because more energy is taken in than released
D. The reaction is exothermic, because more energy is released than taken in
Which describes this reaction, endothermic or exothermic? Why?
A. This reaction is exothermic, because more energy is taken in than released
B. The reaction is endothermic, because more energy is released than taken in
C. The reaction is endothermic, because more energy is taken in than released
D. The reaction is exothermic, because more energy is released than taken in
Answers
GPT-4o mini
To determine whether the reaction is endothermic or exothermic, we need to consider the energy changes involved.
The reaction given is:
\[ \text{C}_2\text{H}_6 + \text{energy} \rightarrow \text{C}_2\text{H}_4 + \text{H}_2 \]
In this reaction, energy is a reactant, indicating that energy is being absorbed. This means that the overall process requires more energy to break the bonds in ethane (\( \text{C}_2\text{H}_6 \)) than what is released when new bonds are formed in ethylene (\( \text{C}_2\text{H}_4 \)) and hydrogen (\( \text{H}_2 \)).
Since energy is absorbed from the surroundings, this reaction is classified as **endothermic**.
Given these insights, the correct answer is:
**C. The reaction is endothermic, because more energy is taken in than released.**
The reaction given is:
\[ \text{C}_2\text{H}_6 + \text{energy} \rightarrow \text{C}_2\text{H}_4 + \text{H}_2 \]
In this reaction, energy is a reactant, indicating that energy is being absorbed. This means that the overall process requires more energy to break the bonds in ethane (\( \text{C}_2\text{H}_6 \)) than what is released when new bonds are formed in ethylene (\( \text{C}_2\text{H}_4 \)) and hydrogen (\( \text{H}_2 \)).
Since energy is absorbed from the surroundings, this reaction is classified as **endothermic**.
Given these insights, the correct answer is:
**C. The reaction is endothermic, because more energy is taken in than released.**