The reaction in a reactor currently has for the forward reaction as written

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

Problem

The reaction C2H4(g)+H2(g)⇌C2H6(g)\text{C}_2\text{H}_4(g)+\text{H}_2(g) \rightleftharpoons \text{C}_2\text{H}_6(g) in a reactor currently has Qc=0.83Q_c = 0.83 for the forward reaction as written. Determine the numerical value of Qc′Q_c' that corresponds to the reaction 2C2H4(g)+2H2(g)⇌2C2H6(g).2\text{C}_2\text{H}_4(g)+2\text{H}_2(g) \rightleftharpoons 2\text{C}_2\text{H}_6(g).

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