# Problem: Ammonium Iodide dissociates reversibly to ammonia and hydrogen iodide:NH4I(s) ⇋ NH3(g) + HI(g)Kp = 0.215 at 400°CIf 150 g of ammonium iodide is placed into a 3.00 L vessel and heated to 400°C, calculate the partial pressure of ammonia when equilibrium is reached. Hint: Ammonium Iodide is a solid, is it used in the equilibrium calculation?

🤓 Based on our data, we think this question is relevant for Professor Tam's class at JMU.

###### FREE Expert Solution
• We can get the partial pressure of ammonia by setting up an ICE table using the Kp given

• Recall that solids don't play a role when we are dealing with pressure at equilibrium ###### Problem Details

Ammonium Iodide dissociates reversibly to ammonia and hydrogen iodide:

NH4I(s) ⇋ NH3(g) + HI(g)

Kp = 0.215 at 400°C

If 150 g of ammonium iodide is placed into a 3.00 L vessel and heated to 400°C, calculate the partial pressure of ammonia when equilibrium is reached. Hint: Ammonium Iodide is a solid, is it used in the equilibrium calculation?

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the ICE Chart concept. You can view video lessons to learn ICE Chart. Or if you need more ICE Chart practice, you can also practice ICE Chart practice problems.

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Based on our data, we think this problem is relevant for Professor Tam's class at JMU.