The equilibrium constant Kp for the reaction 2H2O(g)--> 2H2(g)+O2(g) is 2x10^-42 at 25 degrees C. (a) what is Kc for the reaction at the same temperature? (b) the very small value of Kp (and Kc) indicates that the reaction overwhelmingly favors the formation of water molecules. Explain why, despite this fact, a mixture of hydrogen and oxygen gases can be kept at room temperature without any change.
WE know that the relation between Kp and Kc is
Kp = Kc (RT)^ng
ng = Number of moles of gaseous products - Number of moles of gaseous reactants
ng = (2+1)-2 = 1
Kp = Kc (RT)^1
Kc = Kp / (RT)
R = 0.0821
T = 25 C = 298 K
Kc = 2 X 10^-42 / 0.0821 X 298 = 0.0817 X 10^-42 = 8.17 X 10^-44
b) The reaction is thermodynamically favourable however kinetically it is not favorable. It has a very low rate of reaction
The equilibrium constant Kp for the reaction 2H2O(g)--> 2H2(g)+O2(g) is 2x10^-42 at 25 degrees C. (a)...
The elementary reaction 2H2O(g)−⇀↽−2H2(g)+O2(g)2H2O(g)↽−−⇀2H2(g)+O2(g) proceeds at a certain temperature until the partial pressures of H2O,H2O, H2,H2, and O2O2 reach 0.0200 atm,0.0200 atm, 0.00550 atm,0.00550 atm, and 0.00700 atm,0.00700 atm, respectively. What is the value of the equilibrium constant at this temperature? kp= ?
Consider the reaction: 2H2O (l) ----> 2h2 (g) + O2 (g) What mass of H2O (MW=18.02) is required to form 1.4 L of O2 at a temperature of 30.0 degrees C and a pressure of 750 torr?
Part A Determine the value of Kp for the following reaction: 4HCl(g)+O2(g)⇌2Cl2(g)+2H2O(g) Express the equilibrium constant to three significant digits. Part B Determine the value of Kp for the following reaction: Cl2(g)+H2O(g)⇌2HCl(g)+1/2O2(g) Express the equilibrium constant to three significant digits. Part C What is the value of Kc for the reaction in Part B? Express the equilibrium constant to three significant digits.
Consider the following equilibrium, for which Kp = 7.51×10−2 at 500 ∘C: 2Cl2(g)+2H2O(g)⇌4HCl(g)+O2(g) A.) Determine the value of Kp for the following reaction: 4HCl(g)+O2(g)⇌2Cl2(g)+2H2O(g) B.) Determine the value of Kp for the following reaction: Cl2(g)+H2O(g)⇌2HCl(g)+12O2(g) C.) What is the value of Kc for the reaction in Part B?
Consider the following equilibrium, for which Kp = 7.48×10−2 at 480 ∘C: 2Cl2(g)+2H2O(g)⇌4HCl(g)+O2(g) Part A. Determine the value of Kp for the following reaction: 4HCl(g)+O2(g)⇌2Cl2(g)+2H2O(g) Part B. Determine the value of Kp for the following reaction: Cl2(g)+H2O(g)⇌2HCl(g)+12O2(g) Part C. What is the value of Kc for the reaction in Part B?
For the reaction 2H2O(g)−⇀↽−2H2(g)+O2(g)2H2O(g)↽−−⇀2H2(g)+O2(g) the equilibrium concentrations were found to be [H2O]=0.250 M,[H2O]=0.250 M, [H2]=0.490 M,[H2]=0.490 M, and [O2]=0.750 M.[O2]=0.750 M. What is the equilibrium constant for this reaction?
1. Consider the following reaction: 2H2(g) + O2(g) → 2H2O(1) ΔH = -572 kJ a. How much heat is evolved for the production of 1.00 mole of H2O(1)? b. How much heat is evolved when 4.03g hydrogen are reacted with excess oxygen? c. How much heat is evolved when 186g oxygen are reacted with excess hydrogen?2. The specific heat capacity of silver is 0.24J/°C g. a. Calculate the energy required to raise the temperature of 150.0g Ag from 273K to 298K. b. Calculate the energy required...
Part A Consider the combustion of H2(g):2H2(g)+O2(g)→2H2O(g). If hydrogen is burning at the rate of 0.51 mol/s, what is the rate of consumption of oxygen? Part B What is the rate of formation of water vapor? Part C The reaction 2NO(g)+Cl2(g)→2NOCl(g) is carried out in a closed vessel. If the partial pressure of NO is decreasing at the rate of 56 torr/min, what is the rate of change of the total pressure of the vessel?
Consider the following equilibrium, for which Kp = 7.55×10−2 at 500 ∘C: 2Cl2(g)+2H2O(g)⇌4HCl(g)+O2(g) Part A Determine the value of Kp for the following reaction: 4HCl(g)+O2(g)⇌2Cl2(g)+2H2O(g) Express the equilibrium constant to three significant digits. Part B Determine the value of Kp for the following reaction: Cl2(g)+H2O(g)⇌2HCl(g)+1/2O2(g) Express the equilibrium constant to three significant digits. Part C What is the value of Kc for the reaction in Part B?
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