At 700 K the equilibrium constant for the reaction 2 ,SO_2(g) + O_2(g) ; ; 2 ,SO_3(g) is

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

Problem

At 700 K the equilibrium constant for the reaction 2 SO2(g)+O2(g)  ⇌  2 SO3(g)\mathrm{2\,SO_2(g) + O_2(g) \;\rightleftharpoons\; 2\,SO_3(g)} is Kc=2.80×102K_c = 2.80\times10^{2}. A 2.00 L reaction vessel at 700 K contains 0.500 mol SO2\mathrm{SO_2}, 0.250 mol O2\mathrm{O_2}, and 0.500 mol SO3\mathrm{SO_3}. Calculate the equilibrium concentration of SO3\mathrm{SO_3} (g) at 700 K.

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