How do you estimate the enhydrous magnesium sulphate added is enough for the solvent i the extraction and drying experiment?

To estimate if the amount of anhydrous magnesium sulfate added is sufficient for drying the solvent in an extraction experiment, observe the clarity of the solution after mixing. If the solution remains cloudy or turbid, additional magnesium sulfate may be needed to absorb excess water. Typically, a ratio of 10-20% by weight of magnesium sulfate to the solvent volume can be used as a guideline, adjusting based on the initial water content of the solvent. Finally, ensure that the magnesium sulfate appears clumped or saturated, indicating it has absorbed maximum moisture.