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Effect of Catalyst

The equilibri...

Question

The equilibrium constant K for the reaction H2(g) + 12(g) 2HI(g) at 700 K is 49. What is the equilibrium1constant for the reaction HI(g)H2(g )+ 2(g) at same temperature?2(1) 49(2) 0.005(3) 0.143(4) 14.3

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Solution

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H_{2_{(g)}} + I_{2_{(g)}} ⇌ {2 H I}_{(g)}

{2 H I}_{(g)} ⇌ H_{2_{(g)}} + I_{2_{(g)}}

H_{2} (g) + I_{2} (g) ⇌ 2 H I (g)

0.5 m o l L^{- 1}

H_{2} (g)

I_{2} (g)

500

K_{c}

5

\frac{1}{2} H_{2 (g)} + \frac{1}{2} I_{2 (g)} ⇌ H I_{(g)}

K_{c}

2 H I_{(g)} ⇌ H_{2 (g)} + I_{2 (g)}

H_{2} (g) + I_{2} (g) ⇌ 2 H I (g)

720

48

\frac{1}{2} H_{2} (g) + \frac{1}{2} I_{2} (g) ⇌ H I (g)

Δ G^{\circ} = + 1.7 k J .

25^{0} C

2 H I (g) ⇌ H_{2} (g) + I_{2} (g)

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