Final answer:
For the most accurate measurement of a single volume of liquid, a volumetric flask is the ideal choice. For versatile and variable measurements, a graduated cylinder is commonly used. The correct answer is (c) volumetric flask for single, precise measurements, and (a) graduated cylinder for general use.
Step-by-step explanation:
The question inquires about the most suitable piece of laboratory equipment for accurately measuring the volume of a liquid. There are several types of equipment available for measuring liquid volumes in a laboratory setting, each with its own level of accuracy and precision. The options presented are a graduated cylinder, beaker, volumetric flask, and the consideration of more than one of the above as the correct answer.
Graduated cylinders are often used to measure liquid volumes and are marked with lines to indicate volume. These cylinders can measure milliliters and centiliters and are quite versatile, suitable for general purposes. A beaker can hold liquids and is commonly used for stirring, mixing, and heating substances but is less accurate than other options for measuring volumes due to its wide shape and less precise markings.
A volumetric flask, on the other hand, is designed for precision and is used to prepare solutions to a known volume, offering a high level of accuracy when filled to the marked line. It is especially critical for experiments that require precise measurements such as in the preparation of standard solutions.
Therefore, for the highest precision, the volumetric flask is the best choice when needing to measure a specific volume exactly one time. However, if you need to measure various volumes or require a tool for more general use, a graduated cylinder is the best option. In this context and based on the desired level of accuracy, the correct answer would be (c) volumetric flask for the most accurate single volume measurement and (a) graduated cylinder for more variable measurements.