How much would the boiling point of water increase. If 4 mol of Na Cl were added to 1 kg of water?

To determine the boiling point elevation of water when 4 moles of NaCl are added, we can use the formula for boiling point elevation: ΔT_b = i * K_b * m, where i is the van 't Hoff factor (which is 2 for NaCl since it dissociates into Na⁺ and Cl⁻), K_b for water is approximately 0.512 °C kg/mol, and m is the molality. With 4 moles of NaCl in 1 kg of water, the molality (m) is 4 mol/kg. Thus, ΔT_b = 2 * 0.512 °C kg/mol * 4 mol/kg = 4.096 °C. Therefore, the boiling point of water would increase by approximately 4.1 °C.