Abstract
Chemical reactions at the interface of reactive solutions are of importance for a full understanding of solution reactions. We investigate the chemical reaction induced by the collision of two droplets. The extent of the reaction is measured by analyzing spectra and images of the Raman scattered light emerging from the interface of the colliding droplets of H2SO4 and NH3 aqueous solutions. The obtained product concentration is lower than that expected from a simple diffusion model. The result indicates that a fresh interface is produced at the periphery of the mixing region of the colliding droplets. This study provides the basis to extend this method to measure rapid chemical reactions at the interface of colliding droplets.
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