Does The Boiling Point Of Sodium Hydrosulfite Change Under Different Atmospheric Pressures?

Yes, the boiling point of sodium hydrosulfite (Na2S2O4) changes under different atmospheric pressures. The boiling point of a substance is defined as the temperature at which its vapor pressure equals the atmospheric pressure. As the atmospheric pressure decreases, the boiling point also decreases because less energy is required to overcome the weaker external pressure and allow the molecules to escape into the gas phase. Therefore, if the atmospheric pressure is lowered, the boiling point of sodium hydrosulfite will also decrease. Conversely, if the atmospheric pressure is increased, the boiling point will increase because more energy is needed to overcome the stronger external pressure and allow the molecules to escape into the gas phase.