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Chemistry, 29.11.2019 01:31 emmahall0826
Carbon monoxide and hydrogen compete for surface sites along with other adsorbed intermediates. the reversible adsorption reactions are: co + * < => co* (k1 and k-1)h2 + 2* < => 2h* (k2 and k-2)the equilibrium constants are found to be k1 = 3.8*10^4 and k2 = 4.9*10^3 (cm^3/mol) at 398 k for adsorption on the metal surface. a) determine the fraction of metal sites covered by co and atomic hydrogen at 398 k in the absence of any subsequent reaction (and other species) when the gas phase partial pressures are p(co) = 3 bar and p(h2) = 6 bar. b) if the adsorption energy of hydrogen is 42 kj/mol and the adsorption energy for co is 85 kj/mol, what are the equilibrium concentrations at 373 k? c) based on the answers in a and b, do we want to run this reaction at high or low temperature? why?
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Carbon monoxide and hydrogen compete for surface sites along with other adsorbed intermediates. the...
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