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Chemical Equilibrium

Q. When reaction (1) and (2) below are added together, the result is reaction (3). 1) H2O(l) + HNO2(aq) ⇌ H3O+(aq) + NO2-(aq) 2) H3O+(aq) +OH-(aq) ⇌ 2 H2O(l) 3) HNO2(aq) +OH-(aq) ⇌ NO2-(aq) + H2O(l) If K1 = 4.50 × 10^-4, and K2 = 1.00 × 10^14, find the equilibrium constant,K3. A) 4.50 × 10^10 B) 4.50 × 10^-18 C) 2.22 × 10^17 D) 1.00 × 10^14

Solved • Jul 1, 2019

Chemical Equilibrium

Q. The value of Keq for the equilibrium H2 (g) + I2 (g) ⇌ 2 HI (g) is 54.0 at 427°C. What is the value of Keq for the equilibrium below? HI (g) ⇌ 1/2 H2 (g) + 1/2 I2 (g) A) 2.92 ×10^3 B) 3.43 ×10^-4 C) 0.136 D) 7.35 E) 27

Solved • Jul 1, 2019

Chemical Equilibrium

Q. Phosphorus pentachloride decomposes to phosphorus trichloride and chlorine gas at elevated temperatures by the following reaction: PCl5(g) ⇌ PCl3(g) + Cl2(g). If Kc = 1.8 at 250°C, what is the value of Kp at the same temperature? A) 65 B) 77 C) 4.2 × 10^-2 D) 8.8 × 10^-2

Solved • Jul 1, 2019

Chemical Equilibrium

Q. When reaction (1) and (2) below are added together, the result is reaction (3). 1) H2O(l) + HNO2(aq) ⇌ H3O+(aq) + NO2-(aq) 2) H3O+(aq) + OH-(aq) ⇌ 2 H2O(l) 3) HNO2(aq) + OH-(aq) ⇌ NO2-(aq) + H2O(l) If K1 = 4.50 × 10^-4, and K2 = 1.00 × 10^14, find the equilibrium constant,K3. A) 4.50 × 10^10 B) 2.22 × 10^17 C) 4.50 × 10^-18 D) 1.00 × 10^14

Solved • Jul 1, 2019

Chemical Equilibrium

Q. The equilibrium constant is given for one of the reactions below. Determine the value of the missing equilibrium constant. N2O4(g) ⇌ 2 NO2(g) Kc = 1.46 3 N2O4(g) ⇌ 6 NO2(g) Kc = ? A) 0.685 B) 38.8 C) 3.11 D) 1.46 E) 2.58 × 10^-2

Solved • Jul 1, 2019

Chemical Equilibrium

Q. The reaction below has a Kp value of 41. What is the value of Kc for this reaction at 400 K? N2(g) + 3 H2(g) ⇌ 2 NH3(g) A) 4.4 × 10^4 B) 1.9 × 10^4 C) 2.4 × 10^-2 D) 41 E) 2.3 × 10^-5

Solved • Jul 1, 2019

Chemical Equilibrium

Q. The reaction below has a Kc value of 61. What is the value of Kp for this reaction at 500 K? N2(g) + 3 H2(g) ⇌ 2 NH3(g) A) 28 B) 3.6 × 10^-2 C) 61 D) 15 E) 1.9 × 10^-2

Solved • Jul 1, 2019