Does a reaction occur when aqueous solutions of sodium nitrate and potassium phosphate are combined? yes no If a reaction does occur, write the net ionic equation. Use the solubility nules provided in the OWL. Preparation Page to determine the solubility of compounds. Be sure to specify states such as (aq) or (s). If a box is not needed leave it blank. Does a reaction occur when aqueous solutions of magnesium bromide and ammonium carbonate are combined? yes no. If a reaction does occur, write the net ionic equation. (Use the solubility rules provided in the OWL. preparation Page to determine the solubility of compounds, Be sure to spec leave it blank.)