Question

In: Chemistry

Consider N2O4 (g) ---> 2 NO2 (g) . 3.00 X 10-2 mol of N2O4 are placed...

Consider N2O4 (g) ---> 2 NO2 (g) . 3.00 X 10-2 mol of N2O4 are placed in a 1.0 L flask. AT equilibrium, 2.36 X 10-2 mol of N2O4 remain. What is the Keq for this reaction?

Solutions

Expert Solution

                                 N2O4 (g)              --->              2 NO2 (g)

Initial                          0.03 molar                                  0

Change                  -x                                                 x

At equilibrium              0.03-x                                     x

Keq = [NO2]^2 / [N2O4]

Given :

[N2O4] = x = 0.0236 molar

so [NO2] = 0.03- 0.0236 = 0.0064 molar

so Keq = 0.0064 / (0.0236)^2 = 11.49


Related Solutions

Consider the reaction: 2 NO2 (g) ⇌ N2O4 (g) The ΔGf° for NO2 (g) = 52...
Consider the reaction: 2 NO2 (g) ⇌ N2O4 (g) The ΔGf° for NO2 (g) = 52 kJ/mol and for N2O4 (g) = 98 kJ/mol at 298 K. Calculate the ΔG at the following values. 0.8 M NO2 (g) & 3.0 M N2O4 (g) 4.0 M NO2 (g) & 0.9 M N2O4 (g) 2.2 M NO2 (g) & 2.4 M N2O4 (g) 2.4 M NO2 (g) & 2.2 M N2O4 (g)
Consider the reaction: 2 NO2(g) → N2O4(g) Calculate ΔG (in kJ/mol) at 298°K if the equilibrium...
Consider the reaction: 2 NO2(g) → N2O4(g) Calculate ΔG (in kJ/mol) at 298°K if the equilibrium partial pressures of NO2 and N2O4 are 1.337 atm and 0.657 atm, respectively.
Consider the reaction N2O4 (g) ? 2 NO2 (g). At equilibrium, a 2.00-L reaction vessel contains...
Consider the reaction N2O4 (g) ? 2 NO2 (g). At equilibrium, a 2.00-L reaction vessel contains NO2 at a pressure of 0.269 atm and N2O4 at a pressure of 0.500 atm. The reaction vessel is then compressed to 1.00 L. What will be the pressures of NO2 and N2O4 once equilibrium is re-established?
The half-life for the first-order of decomposition is 1.3 x 10^-5s N2O4(g) 2N02(g) If N2O4 is...
The half-life for the first-order of decomposition is 1.3 x 10^-5s N2O4(g) 2N02(g) If N2O4 is introduced into an evacuated flask at a rate of 17.0mm Hg, how many seconds are required for the No2 to reach 1.3 mm Hg? To solve this problem one plots a graph of______ versus _____. the slope of this lie is equal to negative activation energy divided by ______and has the value ______ 104 K. (2 s.f.) The activation energy is ______ kJ/mole (2...
A flask is charged with 1.350 atm of N2O4(g) and 1.00 atm of NO2(g) at 25...
A flask is charged with 1.350 atm of N2O4(g) and 1.00 atm of NO2(g) at 25 ∘C, and the following equilibrium is achieved: N2O4(g)⇌2NO2(g) After equilibrium is reached, the partial pressure of NO2 is 0.517 atm. Part A: What is the partial pressure of N2O4 at equilibrium? Express the pressure to three significant figures and include the appropriate units Part B: Calculate the value of Kp for the reaction. Express your answer to three significant figures. Part C: Calculate the...
A flask is charged with 1.660 atm of N2O4(g) and 1.01 atm NO2(g) at 25°C. The...
A flask is charged with 1.660 atm of N2O4(g) and 1.01 atm NO2(g) at 25°C. The equilibrium reaction is given in the equation below. N2O4(g) 2NO2(g) After equilibrium is reached, the partial pressure of NO2 is 0.512 atm. (a) What is the equilibrium partial pressure of N2O4? (b) Calculate the value of Kp for the reaction. (c) Is there sufficient information to calculate Kc for the reaction? No, because the value of Kc can be determined experimentally only. Yes, because...
At 300 K, Kc=1.65x10-10 for the reaction: N2O(g) + NO2(g) ⇄ 3NO(g) If 0.400 mol of...
At 300 K, Kc=1.65x10-10 for the reaction: N2O(g) + NO2(g) ⇄ 3NO(g) If 0.400 mol of N2O and 0.600 mol NO2 are added into a 4.00 L container, what will the concentration NO be at equilibrium?
The half-life for the first-order decomposition of N2O4 is 1.3×10?5s. N2O4(g)?2NO2(g) Part A If N2O4 is...
The half-life for the first-order decomposition of N2O4 is 1.3×10?5s. N2O4(g)?2NO2(g) Part A If N2O4 is introduced into an evacuated flask at a pressure of 19.0 mmHg, how many seconds are required for the pressure of NO2 to reach 1.4 mmHg?
For the reaction: N2(g) + 2 O2(g) ↔ 2 NO2(g), Kc = 8.3 × 10-10 at...
For the reaction: N2(g) + 2 O2(g) ↔ 2 NO2(g), Kc = 8.3 × 10-10 at 25°C. What is the concentration of N2 gas at equilibrium when the concentration of NO2 is twice the concentration of O2 gas?
at 200 oC Kc = 1.4 x 10-10 for the reaction N2O(g) + NO2(g) <-> 3NO(g)....
at 200 oC Kc = 1.4 x 10-10 for the reaction N2O(g) + NO2(g) <-> 3NO(g). If 300 ml of NO measured at 800 torr and 25 oC is placed in a 4.00 L container. what will be the N2O and NO molar concentrations at equilibrium? What will be the total pressure of the mixture (in torr) at equilibrium at 25 oC? 14.98 Jespersen 7th Ed.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT