SG using pycnometer

2. Density & Specific Gravity 2.1) Specific Gravity 2.1.2) SG - Pycnometer

2.1.2.1) SG using pycnometer Easy 1


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A 50 mL pycnometer is found to weigh 125 g when empty, 179.88 g when filled with water, and 174.9408 g when filled with olive oil . Calculate the specific gravity of olive oil .


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lb equals 0.91 kg

    Weight of the empty pycnometer = 125 g.
    Weight of the pycnometer containing water = 179.88 g.
    Therefore, the weight water = 179.88 - 125 = 54.88 g.
    Weight of the pycnometer containing olive oil = 174.9408 g.
    Therefore, the weight of the olive oil alone = 174.9408 - 125 = 49.9408 g.
    The specific gravity of olive oil will be the ratio of the weight of olive oil and the weight of water. Therefore, the SG is 49.9408 / 54.88 = 0.91
    Thefore, the answer is 0.91 (no unit).


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