Question

1. which piece(s) of equipment should be used to prepare a solution of a known concentration? select if the following pieces of equipment should be used to prepare a solution of known concentration or not mohr pipet erlenmeyer flask volumetric flask beaker graduated cylinder

Explanation:

A volumetric flask is specifically designed to prepare solutions of known concentration as it has a single - marked volume indicating a precise volume. A Mohr pipet is used for measuring and transferring precise volumes of liquid and can be used in the process of preparing a solution of known concentration. An Erlenmeyer flask is mainly used for mixing and reactions, not for precise volume - based solution preparation. A beaker and graduated cylinder have lower precision in volume measurement compared to a volumetric flask and are not the best choice for preparing solutions of known concentration.

Answer:

Mohr pipet: Yes
Erlenmeyer flask: No
Volumetric flask: Yes
Beaker: No
Graduated cylinder: No