Chemistry

Chemistry

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. I. Increase the temperature by 40 K.40\,\text{K}. II. Remove some HI(g)\text{HI}(g) from the vessel. III. Decrease the volume of the container by one-half. IV. Add an inert gas at constant volume. Which ranking, from greatest to least increase in the equilibrium concentration of HI, is most reasonable? 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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