a 0.0071550[m] "Droplet width"
b 0.0037306[m] "Droplet height"
c_unit 1000[mol/m^3] "Unit activity concentration"
cCO20 KCO2*PCO2*1e3*0.7[mol/m^3] "Initial concentration of CO2"
cH2CO30 KCO2H*cCO20 "Initial concentration of H2CO3"
cHCO30 sqrt(KH2CO3*c_unit*cH2CO30) "Initial concentration of HCO3"
cNaCl0 0.5[M] "Initial concentration of NaCl"
cO2_sol 1.22[mM] "Oxygen solubility"
cO20 cO2s "Initial oxygen concentration"
cO2s cO2_sol*0.21*0.7 "Oxygen concentration at the drop's surface"
ctot_mdis 1e-5[mol/m^2] Total molar availability per surface area for metal dissolution
DCl 2.03e-9[m^2/s] "Diffusion coefficient of Cl"
DCO2 1.96e-9[m^2/s] "Diffusion coefficient of CO2"
DCO3 0.92e-9[m^2/s] "Diffusion coefficient of CO3"
DFe 0.72e-9[m^2/s] "Diffusion coefficient of Fe2"
DH 9.312e-9[m^2/s] "Diffusion coefficient of H"
DH2CO3 2e-9[m^2/s] "Diffusion coefficient of H2CO3"
DHCO3 1.105e-9[m^2/s] "Diffusion coefficient of HCO3"
DNa 1.33e-9[m^2/s] "Diffusion coefficient of Na"
DO2 1.96e-9[m^2/s] "Diffusion coefficient of O2"
DOH 5.26e-9[m^2/s] "Diffusion coefficient of OH"
Eeq_ref_Fe -0.47[V] "Reference equilibrium potential for iron dissolution reaction"
Eeq_ref_O2 0.401[V] "Reference equilibrium potential for oxygen reduction reaction"
i0_ref_Fe 1[A/m^2] "Reference exchange current density for iron dissolution reaction"
i0_ref_O2 1e-7[A/m^2] "Reference exchange current density for oxygen reduction reaction"
alphaa_Fe 1.5 "Anodic transfer coefficient for iron dissolution reaction"
alphaa_O2 3.5 "Anodic transfer coefficient for oxygen reduction reaction"
KCO2 0.0454*(1.6616-5.736e-2*(T[1/K]-273)+1.031e-3*(T[1/K]-273)^2-9.68e-6*(T[1/K]-273)^3+4.471e-8*(T[1/K]-273)^4-7.912e-11*(T[1/K]-273)^5) "Henry's constant"
KCO2H 2.58e-3 "Equilibrium constant for CO2 hydration"
KFeCO3 10^-6.57 "Equilibrium constant for aqueous FeCO3 dissociation"
KFeOH 10^-9.5 "Equilibrium constant for FeOH formation"
kfFeCO3 1[mol/m^3/s] "Reaction rate constant for FeCO3 precipitation"
kfFeOH2 1e6[mol/m^3/s] "Reaction rate constant for FeOH2 precipitation"
KH2CO3 387.6*10^(-(6.41-1.594e-3*TF+8.52e-6*(TF)^2)) "Equilibrium constant for H2CO3 dissociation"
KHCO3 10^(-(10.61-4.97e-3*TF+1.331e-5*(TF)^2)) "Equilibrium constant for HCO3 dissociation"
KspFeCO3 10^-10.7/KFeCO3 "Equilibrium constant, FeCO3 dissolution"
KspFeOH2 8e-16 "Equilibrium constant, FeOH2 dissolution"
M_FeCO3 115.854[g/mol] "Molecular weight of FeCO3"
M_FeOH2 89.86[g/mol] "Molecular weight of FeOH2"
PCO2 400[ppm] "Partial pressure of CO2 in bar"
phil0 0.5[V] "Initial electrolyte potential"
rho_FeCO3 4.03[g/cm^3] "Density of FeCO3"
rho_FeOH2 3.4[g/cm^3] "Density of FeOH2"
T "298 [K]" Temperature
TF (T-0[degC])/1[K]*1.8+32 "Operating temperature in Fahrenheit"
zCl -1 "Charge number of CO3"
zCO3 -2 "Charge number of CO3"
zFe 2 "Charge number of Fe"
zFeOH 1 "Charge number of FeOH"
zHCO3 -1 "Charge number of HCO3"
zNa 1 "Charge number of Na"