We’re being asked to determine the pressure of H2O at equilibrium given the following equilibrium reaction:
NH4NO3(s) ⇌ N2O(g) + 2 H2O(g)I; Kp = 48.5
We can use an ICE chart to establish an equation to determine the pressure of H2O. From this, we can construct an ICE table:
A sample of solid NH4NO3 was placed in an evacuated container and then heated so that it decomposed according to the following equation and established equilibrium:
NH4NO3(s) ⇌ N2O(g) + 2 H2O(g)
Kp for this reaction at a certain temperature is 4.85. What is the pressure of H2O at equilibrium?
A. 1.07 atm
B. 2.13 atm
C. 3.20 atm
D. 3.73 atm
E. 4.05 atm
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