How will you prepare 10mL of .050 M HCl from a .10 M solution of HCl?
mL x M = mL x M
To prepare a 10 mL solution of 0.050 M HCl from a 0.10 M solution of HCl, you need to dilute the concentrated solution.
Here are the steps to prepare the solution:
1. Determine the volume of the concentrated solution needed. Use the formula: C1V1 = C2V2, where C1 is the initial concentration (0.10 M), V1 is the initial volume (unknown), C2 is the final concentration (0.050 M), and V2 is the final volume (10 mL). Rearrange the formula to solve for V1:
V1 = (C2 * V2) / C1
Substituting the values: V1 = (0.050 M * 10 mL) / 0.10 M = 5 mL
Therefore, you need to measure 5 mL of the concentrated 0.10 M HCl solution.
2. Take a clean container, such as a beaker or graduated cylinder, and accurately measure 5 mL of the 0.10 M HCl solution using a pipette or measuring cylinder.
3. Next, transfer the measured 5 mL of the 0.10 M HCl solution into a clean, empty container. You can use a volumetric flask or another container suitable for accurate measurement.
4. Finally, add distilled water to the container gradually, while swirling or stirring, until the total volume reaches 10 mL.
Ensure accurate measurement by bringing the bottom of the meniscus to the calibration line on the flask or measuring cylinder, allowing the solution to reach it through the addition of distilled water.
Note: It is important to use distilled water for dilution to prevent any contamination.
By following these steps, you will have successfully prepared a 10 mL solution of 0.050 M HCl from a 0.10 M HCl solution.