1. Tardigrade
  2. Question
  3. Chemistry
  4. Δ g°(HI, g) ≅ + 1.7 kJ. What is the equilibrium constant at 25°C for 2HI(g) leftharpoons H2(g) + I2 (g)? ’

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Q. $\Delta g^{\circ}(HI, g) \cong + 1.7 kJ.$ What is the equilibrium constant at $25^{\circ}C$ for $2HI(g) \rightleftharpoons H_{2(g)} + I_{2} (g)$? ’

Equilibrium

Solution:

$\Delta G^{o} = - 2.303 \times 8.314 \times 10^{-3} \times 298$ log $K_{p}$
$1.7 = - 2.303 \times 8.314 \times 10^{-3} \times 298 \times$ log $K_{p}$
$K_{p} = 0.5$