change in boiling point temperature is always larger upon adding a solute.
When the vapor pressure of a liquid reaches the pressure of the gas above it, the liquid boils. The temperature at which a liquid will boil decreases with decreasing gas pressure above the liquid.
Up until the critical pressure, the boiling point rises with an increase in pressure, at which time the characteristics of gas and liquid are similar. Beyond the critical point, the boiling point cannot rise. Similar to how the triple point is attained, the boiling point falls with falling pressure. It measures the point at which a chemical boils, to put it simply. A higher boiling point denotes more intermolecular forces and, thus, less vapor pressure, similar to a higher melting point.
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