It is observed that when hexaaquacobalt(II) ions are exposed to chloride ions, that the reaction shown below occurs, and when equilibrium has been established, that the beaker’s contents are purple in color. What does the observation of a purple color alone, suggest about the equilibrium reaction mixture?
2O) 6] 2+ (aq) (red) + 4Cl - (aq) ⇌ [CoCl 4] 2- (aq) (blue) + 6H 2O (l)
Which expression correctly characterizes the relationship between Q and K at equilibrium?
What is true of any reversible reaction reaction that has reached equilibrium?
The chemical reaction below has Kc = 5.0 at a temperature of 2000 K.
2(g) + CO 2(g) ⇌ H 2O (g) + CO (g)
In an experiment, 2.0 moles of H
2(g), 2.0 moles of CO 2(g), 1.0 mole of H 2O (g) and 1.0 mole of CO (g) are brought together in a 1.0 L container at 2000 K.
What happens to the concentration of CO
2(g), as the mixture approaches equilibrium?
Once equilibrium has been established at 2000 K, what would be the effect on Kc, and the effect on the concentration of CO
(g), if a sample of hydrogen gas were injected into the reaction vessel in such a way that the temperature remained constant and the system was allowed to reach equilibrium once more?
What is the Kc for the reaction shown below?
2O (g) + 2CO (g) ⇌ 2H 2(g) + 2CO 2(g)
A weak diprotic acid, H
2X, is known to dissociate in two separate steps. If the equilibrium constant for step 1 (the loss of one H + ion) is called A, and the equilibrium constant for step 2 (the loss of the second proton from HX -) is called B, What is the equilibrium constant for the reaction below?
2X ⇌ 2H + + X -
Which of the following changes cause the equilibrium constant K, for any reaction, to change?
1 mole of PCl
5(g) introduced into and evacuated container and is heated until the following equilibrium is established. Which of the following statements is true?
5(g) ⇌ PCl 3(g) + Cl 2(g)
At a particular temperature, the equilibrium partial pressures of SO
2(g), O 2(g) and SO 3(g) in the equilibrium mixture shown below, are found to be 1.0 atm, 0.5 atm and 3.0 atm respectively. What is the value of Kp at this temperature?
2(g) + O 2(g) ⇌ 2SO 3(g)