The kinematic, diagnostic model of the physics and chemistry of narrow cold-frontal rainbands (described by Rutledge et al. (this issue)) is used to explore chemical interactions within convective precipitation systems. Cloud microphysical and dynamical processes are found to be comparable with chemical processes in affecting chemical deposition. In-cloud sulfate production contributes up to ~50% to wet sulfate deposition. Hydrogen peroxide appears to be the primary oxidant for the production of sulfate in clouds, but the sulfate production is not a linear function of H2O2 concentration, and different sulfate production mechanisms can dominate at different heights in a cloud system. The model predicts that the relationships between sulfur input and sulfate deposition, and nitrogen input and nitrate deposition in narrow cold-frontal rainbands, are in general, nonlinear. Under certain conditions, the model shows that chemical species, particularly SO2, can be redistributed over significant heights by convective cloud systems. The model predicts concentrations of chemical species in precipitation that are similar to the limited field observations that are available.