at temperatures near 800 degrees C, steam passe over hot coke( aform of carbon o

Question

at temperatures near 800 degrees C, steam passe over hot coke( aform of carbon obtained from coal) reacts to form CO andH2: C(s)+H2OCO(g)+H2(g). The mixture of gases thatresults is an important industrial fuel called water gas. Whenequilibrium is achieved at 800 degrees C, [H2]=.040 M,[CO]=.040M, and [H2O]= .010 M. Calcuate Kcand Kp at this temperature.

at temperatures near 800 degrees C, steam passe over hot coke( aform of carbon obtained from coal) reacts to form CO andH2: C(s)+H2OCO(g)+H2(g). The mixture of gases thatresults is an important industrial fuel called water gas. Whenequilibrium is achieved at 800 degrees C, [H2]=.040 M,[CO]=.040M, and [H2O]= .010 M. Calcuate Kcand Kp at this temperature.

Explanation / Answer

Kc = [CO] [ H2] /    [H2O]         = 0.040 M *0.040 M / 0.010 M         = 0.16 Change in gaseous moles, n = 1 Kc = Kp (RT) n 0.16 = Kp ( 0.0821 * (800 + 273)) 1 Hence Kp = 0.00181 Hence Kp = 0.00181

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