2 SO _2( g )+ O _2( g ) 2 SO _3( g ), H=-200

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

Problem

2SO2(g)+O2(g)⇌2SO3(g),ΔH=−200 kJ mol−12\text{SO}_2(\text{g})+\text{O}_2(\text{g})\rightleftharpoons2\text{SO}_3(\text{g}),\qquad\Delta H=-200\,\text{kJ mol}^{-1} According to the above information, what temperature and pressure conditions produce the greatest amount of SO3\text{SO}_3? (1) Temperature: low, Pressure: low (2) Temperature: low, Pressure: high (3) Temperature: high, Pressure: high (4) Temperature: high, Pressure: low

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