Consider the general reaction given below at 400 K. The values of and are studied under the same condition of temperature but variation in and . [2026]

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Solution

Q.
Consider the general reaction given below at 400 K

$x A (g) ⇌ y B (g)$

The values of $K_{p}$ and $K_{c}$ are studied under the same condition of temperature but variation in $x$ and $y$ .

(i) $K_{p} = 85.87$ and $K_{c} = 2.586$ (appropriate units)
(ii) $K_{p} = 0.862$ and $K_{c} = 28.62$ (appropriate units)

The values of $x$ and $y$ in (i) and (ii) respectively are: [2026]

1 (i) 1, 2 (ii) 2, 1

2 (i) 4, 1 (ii) 4, 1

3 (i) 3, 1 (ii) 3, 1

4 (i) 1, 3 (ii) 2, 1

Ans.
(1)

For reaction (i) : $K_{P} > K_{C}$

$Δ n_{g} > 0$

$y - x > 0$

$85.87 = 2.586 {(0.0821 \times 400)}^{y - x}$

Solving $y - x = 1$

For reaction (ii) : $K_{P} < K_{C}$

$y - x < 0$

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