Making a volumetric solution

What should be done if the substance does not dissolve well in the water?

The beaker and its contents should be heated gently until all of the solid has dissolved.

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What could be done instead of weighing the sample bottle before and after transfer of the solid?

The known mass of solid in the weighing bottle could be transferred to the beaker, washed and the washings added to the beaker.

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Where must the meniscus sit when water is added to the volumetric flask?

The bottom of the meniscus should sit on the line on the neck of the volumetric flask.

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Why must the volumetric flask not be heated or contain hot solutions?

The heat would cause the volumetric flask to expand and the volume up to the line would then be incorrect.

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Why is using a volumetric pipette more accurate than a measuring cylinder?

The volumetric pipette has a smaller uncertainty.

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Other cards in this set

What could be done instead of weighing the sample bottle before and after transfer of the solid?

The known mass of solid in the weighing bottle could be transferred to the beaker, washed and the washings added to the beaker.

Where must the meniscus sit when water is added to the volumetric flask?

Why must the volumetric flask not be heated or contain hot solutions?

Why is using a volumetric pipette more accurate than a measuring cylinder?

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