Which technique is preferred for delivering a solid into a pre-weighed beaker for weighing? — Laboratory Chemistry Question
Question
Which technique is preferred for delivering a solid into a pre-weighed beaker for weighing?
A.
Transfer more of the reagent than is needed to the beaker. Return the excess to the bottle with a spatula.
B.✓ Correct
Transfer the desired amount of solid from the reagent bottle by holding the neck of the open bottle over the beaker and tapping the bottle. Then weigh the beaker and solid.
C.
Weigh a spatula, scoop the desired amount of solid from the bottle, transfer it to the beaker and reweigh the spatula.
D.
Weigh a piece of filter paper, tap the neck of the bottle to transfer solid to the filter paper, weigh the filter paper and transfer the solid to the beaker.
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