Reactive gaseous films between two evaporating liquids are studied both analytically and numerically, under simplifying assumptions. For high enough heats of reaction, a semi-analytical solution is exhibited. This solution is used to validate an Arbitrary Lagrangian-Eulerian method. Computations are carried out for low heats of reaction, showing how the system behavior is strongly influenced by the value of the heat of reaction compared to the heats of vaporization of reactants. (C) 2013 Elsevier Ltd. All rights reserved.