A reaction A(aq)+B(aq)↽−−⇀C(aq) A ( aq ) + B ( aq ) ↽ − − ⇀ C ( aq ) has a standard free‑energy change of −3.71 kJ/mol − 3.71 kJ / mol at 25 °C. 25 °C. What are the concentrations of A, A , B, B , and C C at equilibrium if, at the beginning of the reaction, their concentrations are 0.30 M, 0.40 M, and 0 M, respectively? How would your answers change if the reaction had a standard free‑energy change of +3.71 kJ/mol? - There would be more A and B but less C.There would be less A and B but more C. - All concentrations would be lower. - There would be no change to the answers. - All concentrations would be higher.
A reaction A(aq)+B(aq)↽−−⇀C(aq) A ( aq ) + B ( aq ) ↽ − − ⇀ C ( aq ) has a standard free‑energy change of −3.71 kJ/mol − 3.71 kJ / mol at 25 °C. 25 °C. What are the concentrations of A, A , B, B , and C C at equilibrium if, at the beginning of the reaction, their concentrations are 0.30 M, 0.40 M, and 0 M, respectively? How would your answers change if the reaction had a standard free‑energy change of +3.71 kJ/mol? - There would be more A and B but less C.There would be less A and B but more C. - All concentrations would be lower. - There would be no change to the answers. - All concentrations would be higher.
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Chapter18: Thermodynamics And Equilibrium
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A reaction A(aq)+B(aq)↽−−⇀C(aq) A ( aq ) + B ( aq ) ↽ − − ⇀ C ( aq ) has a standard free‑energy change of −3.71 kJ/mol − 3.71 kJ / mol at 25 °C. 25 °C. What are the concentrations of A, A , B, B , and C C at equilibrium if, at the beginning of the reaction, their concentrations are 0.30 M, 0.40 M, and 0 M, respectively?
How would your answers change if the reaction had a standard free‑energy change of +3.71 kJ/mol?
- There would be more A and B but less C.There would be less A and B but more C.
- All concentrations would be lower.
- There would be no change to the answers.
- All concentrations would be higher.
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Step 1: Equlibrium constant
VIEWStep 2: Calculation for equilibrium constant
VIEWStep 3: ICE table
VIEWStep 4: Calculation for unknown y
VIEWStep 5: Calculation for equilibrium concentration of each specie
VIEWStep 6: Effect of change in value of standard Gibbs free energy change on equilibrium
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