Consider the following reaction: C O ( g ) + 2 H 2 ( g ) ? C H 3 O H ( g ) A rea

Question

Consider the following reaction:
CO(g)+2H2(g)?CH3OH(g)
A reaction mixture in a 5.15?L flask at a certain temperature contains 26.7g CO and 2.34g H2. At equilibrium, the flask contains 8.64g CH3OH.




Calculate the equilibrium constant (Kc) for the reaction at this temperature. You win the prize if you can do this. so far nobody is getting right. show some work please
Consider the following reaction:
CO(g)+2H2(g)?CH3OH(g)
A reaction mixture in a 5.15?L flask at a certain temperature contains 26.7g CO and 2.34g H2. At equilibrium, the flask contains 8.64g CH3OH.




Calculate the equilibrium constant (Kc) for the reaction at this temperature. You win the prize if you can do this. so far nobody is getting right. show some work please

Explanation / Answer

Kc=[CH3Oh]/[CO][H2]

initial numebr of moles of CO=26.7/28

=0.953

initial number of moles of H2=2.34/2

=1.17 moles

final number of moles of CH3OH=8.64/32

=0.27

so final number of moles of CO=0.953-0.27

=0.683

final number of moles of H2=1.17-2*0.27

=0.63 moles

so Kc=0.27/(5.15^2*0.63*0.683)

=2.365*10^-2 M^-2

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