Question

How much volume of the 1 M solution do you

need to make 1 L of the .5 M solution of NaCl? Describe how you would prepare the solution.

Answer 1

You would need 0.5 L of the 1 M NaCl solution to prepare 1 L of a 0.5 M NaCl solution. The solution is prepared by diluting the measured volume to the final desired volume using a volumetric flask.

Step-by-step explanation:

To determine how much volume of a 1 M solution is needed to make 1 L of a 0.5 M NaCl solution, we can use the dilution equation, M1V1 = M2V2, where M1 is the concentration of the stock solution, V1 is the volume of the stock solution needed, M2 is the concentration of the diluted solution and V2 is the final volume of the diluted solution.

In this case:

• M1 = 1 M (stock concentration of NaCl)
• M2 = 0.5 M (desired concentration of NaCl)
• V2 = 1 L (desired final volume of NaCl)

We want to find V1, so we rearrange the formula to solve for V1:

V1 = (M2 x V2) / M1

Substituting the values we have:

V1 = (0.5 M x 1 L) / 1 M = 0.5 L

To prepare the solution, measure 0.5 L of the 1 M NaCl stock solution and dilute it with water until the total volume reaches 1 L. Use a volumetric flask for accurate measurement.