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Describe what happens to the rate of the reaction when chemical equilibrium is achieved.
Which of the following statements about chemical equilibrium are true?
Identify the reaction which does not show a homogenous equilibrium.
The equilibrium constant, Kc, for the single-step reaction X(g) + Y(g) ⇌ XY(g) is 3.0×103. Which one of the following is true?
For the given reaction, provide the Kc expression and determine if it is homogenous or heterogenous:
2 Hg(l) + O2(g) ⇌ 2 HgO(s)
Identify the incorrect statement.
Consider the following equilibrium:
H2O (l) ⇌ H2O (g)
At 70°C, what is the value of Kp for this reaction?
The equilibrium constant for the following decomposition reaction at 75.0 °C is 2.73.
NH3BF3(s) ⇌ NH3(g) + BF3(g)
What is the minimum amount of NH3BF3(s) in grams that has to be added to a 0.350 L flask in order to reach equilibrium?
Like naphthalene balls, 1,4-Dichlorobenzene (para-dichlorobenzene) balls are used to kill moth larvae by their slight sublimation at room temperature. A reasonable amount of these were left exposed in a 5.0 m by 5.0 m by 5.0 m room at 25 °C. Assuming that these spheres are pure solid para-dichlorobenzene and that the Kc value for the sublimation reaction is 2.72×10−13 at 25 °C, determine the number of gaseous para-dichlorobenzene molecules present in the room at equilibrium.
C6H4Cl2 (s) ⇌ C6H4Cl2 (g)
The following equation below shows the reaction of hydrogen sulfate anion (HSO4-) with ammonia (NH3) to form sulfate (SO42-) and ammonium ions (NH4+).
HSO4-(aq) + NH3(aq) ⇌ SO42-(aq) + NH4+(aq)
The value of Ka for hydrogen sulfate anion (HSO4-) is 1.26 x 10-2 while the Kb value for ammonia (NH3) is 1.8 x 10-5.
Determine whether the value of Kc will be >1 or <1 for this reaction? Identify the direction which will be favored at equilibrium for this reaction.
Calculate the equilibrium constant Kp for the following reaction at 373.15 K:
2 NO2(g) ⇌ N2(g) + 2 O2(g)
Use the following reactions and their Kc at the same temperature:
NO(g) + 1/2 O2(g) ⇌ NO2(g) Kc = 8.0×104
2 NO(g) ⇌ N2(g) + O2(g) Kc = 5.0×1024
The following reaction is a vital step in the metabolism of glucose: glucose + ATP ⇌ glucose-6-phosphate + ADP
Determine the equilibrium constant for the above reaction using the related equilibrium constants:
glucose + Pi ⇌ glucose-6-phosphate, K = 3.114 × 10–3
ATP ⇌ ADP + Pi, K = 2.716 × 105
Write the expression for the equilibrium constant, Kp, and provide the equation that relates Kp to Kc for the reaction C2H6(g) + Cl2(g) ⇌ C2H5Cl(s) + HCl(g).