If Δ G ° [ H I ( g ) = - 1.7 k J ] , the equilibrium constant for the reaction 2 H I ( g ) ⇌ H 2 ( g ) + I 2 ( g ) at 25 ° C is

Question

If Δ G ° [ H I ( g ) = - 1.7 k J ] , the equilibrium constant for the reaction 2 H I ( g ) ⇌ H 2 ( g ) + I 2 ( g ) at 25 ° C is, 24, 2, 3.6, 0.5

MARKS App · Accepted Answer

Δ G ° = - 2.303 R T log ⁡ K log ⁡ K = - Δ G ° 2.303 R T = - - 1 .7 × 10 3 2.303 × 8.314 × 298 = log K = + 0.298 K 1 = K = 0.298 H 2 + I 2 ⇌ 2 H I K 1 = ( 0.504 ) 2 2 H I ⇌ H 2 + I 2 K 2 = ? K 2 = 1 K 1 = 1 ( 0.504 ) 2 = 3. 6

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