In this experiment, why is the mass of the air not taken into account? In this e

Question

In this experiment, why is the mass of the air not taken into account? In this experiment, the vapor in the flask upon cooling does not completely condense to liquid but is in equilibrium with the liquid. In what way docs this fact affect the accuracy of the final results? If the vapor pressure of your unknown liquid at room temperature was given, how could you correct for its presence upon cooling which resisted in an equilibrium between the liquid and the vapor? List some sources of error which may occur in the determination of your molar mass and give effect they will have upon the final results.

Explanation / Answer

1. Mass of air is negligible when compared to mass of reactants taken. Therefore, generally, mass of air is not measured in any experiment.

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