Which list includes all the pieces of lab equipment needed to prepare a 0.500 M solution of NaCl from the pure salt and water?
A)buret;volumetric flask
B)buret;electronic balance
C)electronic balance;volumetric flask
D)electronic balance;graduated cylinder
E)volumetric pipet and bulb;volumetric flask

Question

Quizplus · Accepted Answer

To prepare a solution, we need to measure the correct amount of solute and dissolve it in a measured amount of solvent. To do this, an electronic balance is needed to measure the amount of NaCl to be dissolved, and a volumetric flask is needed to measure the volume of solvent needed to make a specific molarity. A graduated cylinder does not provide the precise volume needed for a specific molarity, while a buret is typically used to accurately measure the volume of a solution being added to another solution, rather than measuring the volume of solvent needed to make the solution. A volumetric pipet and bulb are also not needed as a volumetric flask alone is sufficient for creating the solution.

Which List Includes All the Pieces of Lab Equipment Needed