Cell model of in-cloud scavenging of highly soluble gases

► We accounted for the diffusion interactions between neighboring cloud droplets. ► We employed method of lines and Monte Carlo simulations. ► Scavenging of highly soluble gases significant decreases their concentration. ► We determined the dependencies of the scavenging coefficient and pH in cloud droplets vs. time. ► The obtained results can be easily incorporated in chemical transport models.