Consider the following system at equilibrium where AH° = -87.9 kJ, and Kc = 83.3, at 500 K: PC13 (9) + Cl₂ (g) ⇒ PC15 (9) When 0.36 moles of PC15 (9) are added to the equilibrium system at constant temperature: The value of Ke Oincreases O decreases remains the same The value of Qc O is greater than Kc O is equal to Kc O is less than Ke The reaction must Orun in the forward direction to reestablish equilibrium Orun in the reverse direction to reestablish equilibrium O remain in the current position, since it is already at equilibrium The concentration of PC13 will O increase O decrease O remain the same Devisus Maud
Consider the following system at equilibrium where AH° = -87.9 kJ, and Kc = 83.3, at 500 K: PC13 (9) + Cl₂ (g) ⇒ PC15 (9) When 0.36 moles of PC15 (9) are added to the equilibrium system at constant temperature: The value of Ke Oincreases O decreases remains the same The value of Qc O is greater than Kc O is equal to Kc O is less than Ke The reaction must Orun in the forward direction to reestablish equilibrium Orun in the reverse direction to reestablish equilibrium O remain in the current position, since it is already at equilibrium The concentration of PC13 will O increase O decrease O remain the same Devisus Maud
Chemistry
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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
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![Consider the following system at equilibrium where \( \Delta H^\circ = -87.9 \, \text{kJ} \), and \( K_c = 83.3 \), at 500 K:
\[ \text{PCl}_3 (g) + \text{Cl}_2 (g) \rightleftharpoons \text{PCl}_5 (g) \]
When 0.36 moles of \( \text{PCl}_5 (g) \) are added to the equilibrium system at constant temperature:
**The value of \( K_c \):**
- ○ increases
- ○ decreases
- ● remains the same
**The value of \( Q_c \):**
- ● is greater than \( K_c \)
- ○ is equal to \( K_c \)
- ○ is less than \( K_c \)
**The reaction must:**
- ○ run in the forward direction to reestablish equilibrium
- ● run in the reverse direction to reestablish equilibrium
- ○ remain in the current position, since it is already at equilibrium
**The concentration of \( \text{PCl}_3 \) will:**
- ○ increase
- ● decrease
- ○ remain the same](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa8b59dc5-8eba-4810-82d4-2f7a8165d7d4%2F892fc5bb-bbb2-4814-a770-e4b9834f3cce%2Fu1bqc6a_processed.png&w=3840&q=75)
Transcribed Image Text:Consider the following system at equilibrium where \( \Delta H^\circ = -87.9 \, \text{kJ} \), and \( K_c = 83.3 \), at 500 K:
\[ \text{PCl}_3 (g) + \text{Cl}_2 (g) \rightleftharpoons \text{PCl}_5 (g) \]
When 0.36 moles of \( \text{PCl}_5 (g) \) are added to the equilibrium system at constant temperature:
**The value of \( K_c \):**
- ○ increases
- ○ decreases
- ● remains the same
**The value of \( Q_c \):**
- ● is greater than \( K_c \)
- ○ is equal to \( K_c \)
- ○ is less than \( K_c \)
**The reaction must:**
- ○ run in the forward direction to reestablish equilibrium
- ● run in the reverse direction to reestablish equilibrium
- ○ remain in the current position, since it is already at equilibrium
**The concentration of \( \text{PCl}_3 \) will:**
- ○ increase
- ● decrease
- ○ remain the same
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