Choose the incorrect statement regarding the softening of hard water by ion-exchange Softening can be carried out either as a batch or a continuous process Calcium and magnesium ions in water are exchanged for sodium ions The cation exchange resin attracts negatively charged ions The exhausted resin may be regenerated by NaCl solution The reactions are stoichiometric and reversible Choose the incorrect statement regarding the softening of hard water by ion-exchange Softening can be carried out either as a batch or a continuous process Calcium and magnesium ions in water are exchanged for sodium ions The cation exchange resin attracts negatively charged ions The exhausted resin may be regenerated by NaCl solution The reactions are stoichiometric and reversible