In a chemical reaction , the initial concentration of B was 1.5 times of the concentration of A, but the equilibrium concentrations of A and B were found to be equal. The equilibrium constant (K) for

Question

In a chemical reaction , the initial concentration of B was 1.5 times of the concentration of A, but the equilibrium concentrations of A and B were found to be equal. The equilibrium constant (K) for the chemical reaction is:

Canvas Classes · Accepted Answer

Step 1 — Set up variables:

Let initial , initial , initial .

Let  = moles of A reacted per litre.

Step 2 — ICE table:

| | A | B | C | D |
|--|--|--|--|--|
| Initial |  |  | 0 | 0 |
| Change |  |  |  |  |
| Equil. |  |  |  |  |

Step 3 — Use condition :

Step 4 — Equilibrium concentrations:

Step 5 — Calculate K:

Answer: Option (2) — K = 4

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