11 Questions
Which of the following scientific notations represents the largest value?
3.1 × 10^3
What is the value of the equilibrium constant (Kc') for the reverse reaction of the reaction 2 NO(g) + O2(g) ⇌ 2 NO2(g), given the equilibrium concentrations of NO, O2, and NO2 are 0.300 M, 0.200 M, and 0.530 M, respectively, at 25°C?
0.0641
For the reaction 2 CH4(g) + 3 O2(g) ⇌ 2 CO(g) + 4 H2O(g), which statement about the relationship between Kp and Kc is correct?
Kp > Kc
If a flask initially contains 1.00 atm of each gas for the isomerization reaction cis-2-butene ⇌ trans-2-butene with Kp = 3.40 at 25°C, in which direction will the system shift to reach equilibrium?
It will shift to the reactant side
For the isomerization reaction butane ⇌ isobutane with Kp = 25 at 500°C, if the initial pressures of butane and isobutane are 10.0 atm and 0.0 atm, respectively, what are the equilibrium pressures of the two gases?
Pbutane = 0.38 atm and Pisobutane = 9.6 atm
What is true about the equilibrium constant for a chemical reaction?
The value of the equilibrium constant changes as the temperature changes.
What is the value of the equilibrium constant, $K_c$, for the reaction: A(g) + B(g) ⇌ 2C(g) at 25°C, given the rate constants $k = 1.4 \times 10^{-12}$ M$^{-1}$ s$^{-1}$ for the forward reaction and $k = 2.7 \times 10^{-13}$ M$^{-1}$ s$^{-1}$ for the reverse reaction?
5.2
Which of the following reactions has the largest equilibrium constant?
A$_2$ + B$_2$ ⇌ 2 AB
What is the equilibrium equation for the reaction: NH$_4$NO$_3$(s) ⇌ N$_2$O(g) + 2 H$_2$O(g)?
$K_c = [\text{N}_2\text{O}] [\text{H}_2\text{O}]^2$
Given the reaction 2 HI(g) ⇌ H$_2$(g) + I$_2$(g) at 300 K, the partial pressure of HI at equilibrium is 1.8 × 10$^{-3}$ atm and the partial pressures of H$_2$ and I$_2$ are both 0.10 atm. What is the value of the equilibrium constant $K_p$ at 300 K?
1.0 × 10$^{-5}$
Which statement about the equilibrium constant is correct?
The equilibrium constant changes as the temperature changes.
Test your knowledge on equilibrium constants with questions about their behavior with temperature changes and how to calculate the equilibrium constant for a given reaction. Practice solving equilibrium constant calculations.
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