Question

In the laboratory, a student dilutes 22.6 mL of a 7.79 M hydrochloric acid solution to a total volume of 300.0 mL. What is the concentration of the diluted solution?

Answer 1

To find the concentration of the diluted HCl solution, use the dilution formula M1V1 = M2V2 to get a final concentration of 0.604 M.

Step-by-step explanation:

The student in the laboratory diluted 22.6 mL of a 7.79 M hydrochloric acid solution to a total volume of 300.0 mL. To calculate the concentration of the diluted solution, we can use the formula:

M1V1 = M2V2

Where:

• M1 is the initial molarity of the HCl solution (7.79 M)
• V1 is the initial volume of the HCl solution (22.6 mL)
• M2 is the final molarity of the diluted solution
• V2 is the final total volume (300.0 mL)

By rearranging the formula to solve for M2, we get:

M2 = (M1V1) / V2

Inserting the values provided:

M2 = (7.79 M * 22.6 mL) / 300.0 mL

The concentration of the diluted solution is calculated to be:

0.604 M