Problem: 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 atmE. 4.05 atm

FREE Expert Solution

We’re being asked to determine the pressure of H2at 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:

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Problem Details

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