Find the best answers to your questions with the help of IDNLearn.com's knowledgeable users. Whether it's a simple query or a complex problem, our community has the answers you need.
Sagot :
To solve this problem, we need to reverse the given chemical reaction and determine the enthalpy change for the reversed reaction. Let's analyze step-by-step:
1. Understand the Original Reaction and its Enthalpy Change:
- The given reaction is:
[tex]\[ H_2 + 0.5 O_2 \rightarrow H_2O \][/tex]
- The enthalpy change ([tex]\(\Delta H\)[/tex]) for this reaction is [tex]\(-286 \, \text{kJ}\)[/tex].
2. Reverse the Reaction:
- Reversing the reaction means flipping the reactants and products:
[tex]\[ H_2O \rightarrow H_2 + 0.5 O_2 \][/tex]
3. Determine the New Enthalpy Change:
- When reversing a chemical reaction, the sign of the enthalpy change also reverses. The original reaction had an enthalpy change of [tex]\(-286 \, \text{kJ}\)[/tex].
- Reversing the reaction changes the sign of [tex]\(\Delta H\)[/tex]:
[tex]\[ \Delta H_{reversed} = -(-286 \, \text{kJ}) = 286 \, \text{kJ} \][/tex]
Thus, the enthalpy change for the reversed reaction is [tex]\(286 \, \text{kJ}\)[/tex].
4. Select the Correct Answer:
- Among the given choices, the correct answer is:
[tex]\[ \text{A. } 286 \, \text{kJ} \][/tex]
1. Understand the Original Reaction and its Enthalpy Change:
- The given reaction is:
[tex]\[ H_2 + 0.5 O_2 \rightarrow H_2O \][/tex]
- The enthalpy change ([tex]\(\Delta H\)[/tex]) for this reaction is [tex]\(-286 \, \text{kJ}\)[/tex].
2. Reverse the Reaction:
- Reversing the reaction means flipping the reactants and products:
[tex]\[ H_2O \rightarrow H_2 + 0.5 O_2 \][/tex]
3. Determine the New Enthalpy Change:
- When reversing a chemical reaction, the sign of the enthalpy change also reverses. The original reaction had an enthalpy change of [tex]\(-286 \, \text{kJ}\)[/tex].
- Reversing the reaction changes the sign of [tex]\(\Delta H\)[/tex]:
[tex]\[ \Delta H_{reversed} = -(-286 \, \text{kJ}) = 286 \, \text{kJ} \][/tex]
Thus, the enthalpy change for the reversed reaction is [tex]\(286 \, \text{kJ}\)[/tex].
4. Select the Correct Answer:
- Among the given choices, the correct answer is:
[tex]\[ \text{A. } 286 \, \text{kJ} \][/tex]
Thank you for being part of this discussion. Keep exploring, asking questions, and sharing your insights with the community. Together, we can find the best solutions. Thank you for trusting IDNLearn.com with your questions. Visit us again for clear, concise, and accurate answers.