Ethylene gas and steam at 320°c and atmospheric pressure are fed to a reaction process as an equimolar mixture. the process produces ethanol by the reaction: c2h4(g) + h2o(g) → c2h5oh(l)c2h4(g) + h2o(g) → c2h5oh(l) the liquid ethanol exits the process at 25°c. what is the heat transfer associated with this overall process per mole of ethanol produced?
The heat transfer formula is; Q = m * c * Δ T >>>> (1) where, Q is the heat transfer m = mass (gram) c = the specific heat capacity (J/g) Δ T = change in temperature ∵ we have one mole of Ethanol ∴ the weight of ethanol equals its molecular weight = (2*12)+(6*1)+(16) = 46 g we will assume that the specific heat capacity of ethanol is 2.46 J/g (from google) ΔT = 25 - 320 = - 295 C By substitution in (1) ∴ Q = 2.46 * 46 * (-295) = - 33382.2 J
