2 10 pts The following pertain to chemical reactions a Write

2. [10 pts] The following pertain to chemical reactions. (a) Write down the quotients Q for the following reactions: N2+ 3H2 CO+ 2H2 2NO + O2 2NH3 CH3OH, 2NO2

Solution

(a) for a reaction aA + bB-> cC

Q = C^c/(A^axB^b)

therefore for first reaction

Q = [NH3]²   / ([N2] X [ H2]³)

for SECOND reaction

Q=[CH3OH ]/( [CO] X [H2]²)

FOR THIRD REACTION

Q= [NO2]² / [NO]² [O2]²

^B) For successive reactions the effective equilibrium constant is product of the equilibrium constants of the equations

that is Keq = K1 X K2

CO + H2O -> CO2 + H2

CH4 +H2O-> CO + 3H2

CH4 + 2H2O-> CO2 + 4H2

K = K1 X K2 = 1.4 X 5.3 X 10^-4 = 7.42 X 10^-4 ANS

c) 2 H2S + CH4 -> 4H2 + CS2

K = [H2]⁴ [ CS2] / [H2S]² [CH4]

let [H2] = x

4.56 = (x⁴  x 0.37 ) / (0.15)² x 0.56

x = 0.6277 ans