When calculating consumption of certain RO chemicals for reverse osmosis pretreatment or post-treatment, it is often necessary to convert into moles. For example, certain types of chlorine dioxide (ClO2) generators would use sodium hypochlorite (NaOCl), sodium chlorite (NaClO2) and hydrochloric acid (HCl). Knowing the desired concentration of ClO2, the system integrator can calculate the consumption of each of the reactants using the stoichiometric relationship:
2NaClO2 + NaOCl + 2HCl ↔ 2ClO2 + H2O + 3NaCl
Many other calculations require conversion into moles. These include consumption of pH adjustment chemicals for RO feedwater, solubilities of scale forming compounds in reverse osmosis systems, and cation rejection calculations using charge balance (meq/l) in nanofiltration systems.
This calculator is a convenient tool for calculating the molar mass of chemical compounds in lieu of using a periodic table. The chemical formula should be entered using standard format. For example, calcium carbonate would be entered as CaCO3, not caco3. Tricalcium phosphate would be entered as Ca3(PO4)2. This molar mass calculator can only handle two bracket levels at a time.
