Consider the equilibrium H _2(g)+ I _2(g) 2 , HI (g) H^ =+51 kJ Four separate…

CHEMISTRY · Single correct · A Level · Chemistry · Chemical equilibria (Le Chatelier’s principle and Kc) · Chemical equilibria (Le Chatelier’s principle and Kc)

Problem

Consider the equilibrium H2(g)+I2(g)⇌2 HI(g)ΔH∘=+51 kJ\text{H}_2(g)+\text{I}_2(g)\rightleftharpoons2\,\text{HI}(g)\qquad\Delta H^{\circ}=+51\text{ kJ} Four separate stresses are proposed. (a) II>I>III>IV\text{II} > \text{I} > \text{III} > \text{IV} (b) III>I>II>IV\text{III} > \text{I} > \text{II} > \text{IV} (c) I>II>III>IV\text{I} > \text{II} > \text{III} > \text{IV} (d) I>IV>III>II\text{I} > \text{IV} > \text{III} > \text{II}

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