Question

What is the best type of stirring device to use for stirring a reaction that takes place in the following type of glassware?

a. a conical vial
b. a 10-ml round-bottom flask
c. a 250-ml round-bottom flask

Answer 1

For a conical vial or a small round-bottom flask like a 10-ml one, a magnetic stir bar is ideal, while a 250-ml round-bottom flask may require a larger magnetic stir bar or a mechanical stirrer with a paddle. So the correct answer is option B.

Step-by-step explanation:

The best type of stirring device to use for stirring a reaction depends on the size and shape of the glassware in which the reaction is taking place.

For a conical vial or a 10-ml round-bottom flask, a magnetic stir bar would typically be the most appropriate choice as it can be easily accommodated in a small space and provides efficient mixing. In a 250-ml round-bottom flask, a larger magnetic stir bar or a mechanical stirrer with a paddle attachment might be used for stirring the reaction mixture.

The stirring device must be proportionate to the size of the glassware to ensure proper mixing without causing splashing or damage to the glassware.