For the reaction 0.250 , ,0.002 ,mol of and 0.200 , ,0.002 ,mol of are introduced…

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

Problem

For the reaction 2 NO(g)+O2(g)⇌2 NO2(g)2\,\mathrm{NO(g)} + \mathrm{O_2(g)} \rightleftharpoons 2\,\mathrm{NO_2(g)} 0.250\,±\pm\,0.002\,mol of NO\mathrm{NO} and 0.200\,±\pm\,0.002\,mol of O2\mathrm{O_2} are introduced into a rigid 2.00\,L container at 298\,K. At equilibrium, 0.150\,±\pm\,0.002\,mol of NO\mathrm{NO} remain. Determine the equilibrium constant KcK_c at 298\,K and report it using the correct number of significant figures justified by the experimental data.

Related theory

Browse the problem library