Water decomposes at 2300 K:

The percent of water decomposing at 2300 K and 1 bar is (Nearest integer). Equilibrium constant for the reaction is at 2300 K.

Question

Water decomposes at 2300 K:

The percent of water decomposing at 2300 K and 1 bar is  (Nearest integer). Equilibrium constant for the reaction is  at 2300 K.

Canvas Classes · Accepted Answer

Step 1 — ICE table (start with 1 mol ,  = degree of dissociation):

| | H₂O | H₂ | O₂ | Total |
|--|--|--|--|--|
| Initial | 1 | 0 | 0 | 1 |
| Equil. |  |  |  |  |

Step 2 — Partial pressures at P = 1 bar:

Step 3 —  expression:

For small  (since  is very small):

,

Step 4 — Nearest integer:

Percent decomposition . Nearest integer = 1 (rounding to nearest integer of the small value).

Answer: 1

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