At equilibrium, how does reaction quotient Q compare with equilibrium constant K?
A) Q equals K B) Q must be zero C) Q is always larger D) They have unrelated units only […]
Chemical Equilibrium, Chemistry
Chemical Equilibrium
Chemical Equilibrium, Chemistry
Does a catalyst change the equilibrium position of a reversible reaction?
A) No, it speeds approach to equilibrium in both directions B) Yes, it always makes 100% product C) Yes, it […]
Chemical Equilibrium, Chemistry
Does adding a catalyst change the equilibrium constant at fixed temperature?
A) Yes, it always doubles it B) Yes, it reverses the sign C) Only when the container is open D) […]
Chemical Equilibrium, Chemistry
Does changing temperature usually change a reaction’s equilibrium constant?
A) No, it is identical at all temperatures B) Yes C) Only if pressure is zero D) Only in the […]
Chemical Equilibrium, Chemistry
For 2H₂O ⇌ 2H₂ + O₂, which expression gives Kc in terms of equilibrium concentrations?
A) [H₂O]² / [H₂]²[O₂] B) sum of all reactant concentrations C) sum of all product concentrations D) [H₂]²[O₂] / [H₂O]² […]
Chemical Equilibrium, Chemistry
For 2NO + O₂ ⇌ 2NO₂, which expression gives Kc in terms of equilibrium concentrations?
A) ([NO]²[O₂]) / [NO₂]² B) [NO₂]² / ([NO]²[O₂]) C) sum of all reactant concentrations D) sum of all product concentrations […]
Chemical Equilibrium, Chemistry
For 2SO₂ + O₂ ⇌ 2SO₃, which expression gives Kc in terms of equilibrium concentrations?
A) ([SO₂]²[O₂]) / [SO₃]² B) [SO₃]² / ([SO₂]²[O₂]) C) sum of all reactant concentrations D) sum of all product concentrations […]
Chemical Equilibrium, Chemistry
For a reaction with Δn(gas) = 0, how do Kp and Kc compare ideally?
A) They are equal B) Kp is always zero C) Kp is always twice Kc D) They must have opposite […]
Chemical Equilibrium, Chemistry
For an exothermic equilibrium, what effect can adding heat have on product yield?
A) It often shifts toward reactants B) It always doubles product yield C) It has no possible effect D) It […]
Chemical Equilibrium, Chemistry
For an exothermic forward reaction, what happens to K when temperature increases?
A) It must double B) It becomes negative C) It generally decreases D) It never changes Answer: C Explanation: Heat […]