Question

Choose the best piece of equipment for each purpose.

graduated cylinder

volumetric flask

beaker

buret

_____A. used for mixing two solutions together
a) Graduated cylinder
b) Volumetric flask
c) Beaker
d) Buret

_____B. used for measuring amounts of liquid precisely
a) Graduated cylinder
b) Volumetric flask
c) Beaker
d) Buret

_____C. used for making solutions of known molarity
a) Graduated cylinder
b) Volumetric flask
c) Beaker
d) Buret

Answer 1

A beaker is suitable for mixing solutions, a buret for measuring precise liquid volumes, and a volumetric flask for preparing solutions with known molarity.

Step-by-step explanation:

For each laboratory task described, the best equipment can be selected based on accuracy, volume and the specific procedure involved.

• A. used for mixing two solutions together: c) Beaker. Beakers are great for general mixing and stirring of solutions due to their wide opening and relatively large volume capacity.
• B. used for measuring amounts of liquid precisely: d) Buret. A buret is especially designed for dispensing precise volumes of liquid, often down to 0.01 mL, which is integral for tasks like titrations.
• C. used for making solutions of known molarity: b) Volumetric flask. Volumetric flasks have a single calibration mark for containing an exact volume of liquid, which is essential for preparing solutions of known concentration.