NOVELTY - The electrochemical system (100) comprises a cathode compartment (102) partitioned into first (104) and second (106) cathode electrolyte compartments, an anode electrolyte in an anode compartment that is in contact with an anode, a hydrogen gas delivery system to direct hydrogen gas produced at the cathode to the anode, and an ion exchange membrane between the anode and cathode compartments. A liquid flows between the cathode electrolyte (108) in the first compartment and the cathode electrolyte in the second compartment while placing electrolyte in the cathode compartment.    USE - The electrochemical system is useful for: producing hydroxide ions in the second cathode electrolyte compartment with less than 2V across the anode and cathode; producing a pH differential between the anode and cathode electrolytes; producing hydrogen gas at the cathode; migrating hydroxide ions from the second cathode electrolyte compartment to the first cathode electrolyte compartment; migrating sodium ions from the third electrolyte to cathode electrolyte through the cation exchange membrane; migrating chloride ions from the third electrolyte to the anode electrolyte through the anion exchange membrane; producing hydrochloric acid in the anode electrolyte; and producing sodium hydroxide, sodium carbonate and/or sodium bicarbonate in the cathode electrolyte and partially desalinated water in the third electrolyte (all claimed).    ADVANTAGE - The electrochemical system is capable of economically, rapidly and continuously generating power with less consumption of energy and voltage.    DETAILED DESCRIPTION - The electrochemical system (100) comprises a cathode compartment (102) partitioned into first (104) and second (106) cathode electrolyte compartments, an anode electrolyte in an anode compartment that is in contact with an anode, a hydrogen gas delivery system to direct hydrogen gas produced at the cathode to the anode, and an ion exchange membrane between the anode and cathode compartments. A liquid flows between the cathode electrolyte (108) in the first compartment and the cathode electrolyte in the second compartment while placing electrolyte in the cathode compartment. The cathode electrolyte in the second compartment is in contact with a cathode. The first cathode electrolyte compartment is operatively connected to an industrial waste gas system that comprises carbon dioxide, which is derived from combusting fossil fuels. The gas is absorbed into the cathode electrolyte. The carbon dioxide gas is isolated from cathode electrolyte in the second compartment such that the carbon dioxide gas is prevented from contacting the cathode. The system does not produce a gas at the anode. The cathode compartment is operatively connected to a hydroxide, carbonate and/or bicarbonate precipitation system, which is configured to utilize the cathode electrolyte to produce hydroxide, carbonates and/or divalent cation bicarbonate. The ion exchange membrane comprises a cation exchange membrane separating the cathode electrolyte in the second compartment from a third electrolyte, and an anion exchange membrane separating the anode electrolyte from a third electrolyte. An INDEPENDENT CLAIM is included for an electrochemical method.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic view of an electrochemical system.    Electrochemical system (100)    Cathode compartment (102)    First cathode electrolyte compartment (104)    Second cathode electrolyte compartment (106)    Cathode electrolyte. (108)