Two Signed Pieces Of Glassware (2024)

FAQs

What two pieces of glassware should you use to make an accurate solution? ›

Explain. There are 3 steps to solve this one. To make an accurate solution, you should use a volumetric flask and a calibrated micropipette.

Student answers will vary, but they should notice higher accuracy for the volumetric flask and graduated cylinder. Using individual data and the density of water table, calculate the actual volume of water in each piece of glassware.

Volumetric flasks

used to obtain precise volume measurements. A high quality volumetric flask can have an accuracy of plus or minus 0.05%.

Volumetric glassware that is meant to deliver a volume of substance (TD) will be calibrated to deliver a specific volume. However, it will hold more (i.e., the capacity of the entire toothpaste tube). In contrast, laboratory glassware meant to receive a substance (TC) will be calibrated to contain a specific volume.

Volumetric flasks, burets and pipets are the most accurate with tolerances of less than 0.2%. To achieve these accuracies the person using the device needs to use the proper technique and the measurements need to made at the temperature for which the glassware was calibrated (usually 20 degrees C).

Pipets and volumetric flasks are used when we need to know a solution's exact concentration; graduated cylinders, beakers, and/or reagent bottles suffice when a concentrations need only be approximate.

Answer and Explanation:

The piece of glassware used for measuring 10.00 mL of solution is pipette. Graduated cylinders are the glasswares used for measuring different volumes of liquid.

Final answer: In a lab experiment, the 100-mL graduated cylinder is the least precise piece of glassware. This is because it has wider gradations and a higher margin of error compared to a 50-mL burette or a 100-mL volumetric flask.

Using all the data that was collected, we can conclude that all glassware does not measure with the same accuracy and precision. Different glassware are made for different purposes. Some glassware are designed to have more accuracy and different levels of certainty than others.

A volumetric flask (measuring flask or graduated flask) is a piece of laboratory glassware, a type of laboratory flask, calibrated to contain a precise volume at a particular temperature. Volumetric flasks are used for precise dilutions and preparation of standard solutions.

Which of the following pieces of glassware could be used to measure volumes between 5ml and 10ml with the greatest precision? ›

The best choice would be the graduated cylinder. The graduated cylinder can measure volumes with errors of 0.5% to 1%.

Graduated cylinders are designed for accurate measurements of liquids with a much smaller error than beakers.

Beakers are simple cylindrical shaped containers used to hold reagents or samples. Flasks are narrow-necked glass containers, typically conical or spherical, used in a laboratory to hold reagents or samples.

Question: A) A burette is a device used to deliver a variable but precisely known volume during, for example, a titration (refer to p. xviii a more detailed description). A volume measurement using a burette is performed in duplicate giving the following data.

Final answer:

The most effective glassware for accurate solution preparation is the volumetric flask and volumetric pipet, used for containing and delivering precise volumes, respectively.

Flasks: Erlenmeyer Flask: The conical shape makes it ideal for mixing and storing liquids, especially when you need to minimize evaporation. Volumetric Flask: Designed for precise volume measurements, these flasks are crucial for preparing accurate solutions.

Calibrated Glass Pipettes. When a high level of precision is needed while dispensing liquids, calibrated glass pipettes (volumetric or graduated) can be used.

Volumetric glassware: graduated flask, pipettes, burette, graduated cylinder.

Volumetric flasks, burettes, and pipettes, engineered for the precise quantification of small quantities, deliver unparalleled accuracy, boasting tolerances of less than ±0.02.