At 1189 K the gas phase decomposition of the acetic acid proceeds by the way of two parallel reactions:
CH3COOH àCH4 +CO2 k1 = 3.74 s-1
CH3COOH àCH2CO +H2O k2 = 4.65 s-1
Determine the maximum percentage yield of the ketene CH2CO obtainable at this temperature?