3. +1.5/5 points | Previous Answers My Notes Ask Your Teacher The water-gas shif

Question

3. +1.5/5 points | Previous Answers My Notes Ask Your Teacher The water-gas shift reaction plays a central role in the chemical methods for obtaining cleaner fuels from coal. CO(g) +H20(g)CO2g)H2(g) At a given temperature Kp = 2.7. If 0.22 mol CO, 0.51 mol H2O, 0.57 mol CO2 and 0.45 mol H2 are introduced into a 2.5 L flask, what is the value of Qc? What is the value of 2p? 402 In which direction must the reaction proceed to reach equilibrium? already at equilibrium toward reactants toward products

Explanation / Answer

CO (g) + H2O (g) <----> Co2 (g) + H2 (g)

Qc = [CO2][H2]/[Co][H2O]

Qc = (0.57/2.5)*(0.45/2.5)/((0.22/2.5)*(0.51/2.5))

QC = 2.2861

Qp = Qc*(RT)^dn where dn = change in number of moles of gseous substances.

here dN = 0 so Qc = Qp

Qp = 2.2861

and given Kp = 2.7

Kp > Qp hence the equilibrium shifts in forward direction i.e., from leftt to right.

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