If the boiling point is recorded when bubbles are rapidly escaping the capillary tube, it is likely to be recorded too high. This is because the presence of bubbles indicates that the liquid is already undergoing vigorous boiling, which can lead to superheating. Additionally, if the measurement is taken at a moment when vapor is escaping, it may not accurately represent the equilibrium boiling point of the liquid, which is typically determined under stable conditions.
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