Which produces the greatest number of ions when one mole dissolves in water? which produces the greatest number of ions when one mole dissolves in water? na2so4 nh4no3 nacl nh4cl sucrose?

The answer is NaSO4 because one mole sodium sulfate Na2SO4 dissociates into two moles of sodium ions Na+ and one mole of sulfate ions SO42-.
When one mole of ammonium chloride NH4Cl dissolves in water, it dissociates into one mole of ammonium ions NH4+, and one mole of chloride ions Cl−.
Also 1 mol NH4NO3 produces 1 mol NH4+ ions and 1 mol NO3- ions, while 1 mol NaCl  dissociates into 1 mol Na+ ions and 1 mol Cl− ions.
Sucrose does not ionize in water, therefore, sodium sulfate NaSO4 produces the greatest number of ions among the given compounds.