c2_prod K_ads*re3.c_O2_aq*re3.c_CN_1m^3 "Common subexpression (factored for brevity)"
Rs2_Au k_Au*c2_prod/(1+c2_prod) "Surface rate of dissolution, Eq. 32 in Senanayake 2005"
spherical_S "max(re3.c_Au_solid/liquid_c0_Au, 1e-100)^(2/3)*spherical_S0" "Transient total surface area of gold spheres"
spherical_R_Au Rs2_Au*spherical_S/V_liquid "Volumetric rate of dissolution, modulated by remaining surface area"
V_Au "(liquid_c0_Au - re3.c_AuCNCN_1m)*V_liquid*Mw_Au/rho_Au" "Volume of solid phase"
V_gas V_reactor-V_liquid-V_Au "Volume of gas phase"