describe step by step, how will you prepare 10 mL of 0.020 M HCL from the 0.050 M solution?
Use the dilution equation of
c1v1 = c2v2
10 mL x 0.02M = 0.05*v2
v2 = 10 x 0.02/0.05 = ?
So you want to take ? mL of the 0.05 and make up to 10 mL total volume.
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To prepare 10 mL of 0.020 M HCl from a 0.050 M solution, follow these steps:
Step 1: Calculate the volume of the 0.050 M HCl solution needed.
- Use the formula: C1V1 = C2V2
- C1 = 0.050 M (concentration of the original solution)
- V1 = unknown (volume of the original solution)
- C2 = 0.020 M (desired concentration)
- V2 = 10 mL (desired final volume)
- Rearrange the formula to solve for V1: V1 = (C2 * V2) / C1
- Plug in the values: V1 = (0.020 M * 10 mL) / 0.050 M
- Calculate V1: V1 = 4 mL
Step 2: Measure 4 mL of the 0.050 M HCl solution using a pipette.
- Ensure the pipette is clean and properly calibrated.
- Draw the solution up to the 4 mL mark on the pipette.
Step 3: Transfer the 4 mL of the 0.050 M HCl solution into an appropriately sized container.
- Use a beaker or any other suitable container for the volume.
Step 4: Add distilled water to the container to make up the final volume of 10 mL.
- Use a graduated cylinder or pipette to measure the required amount of distilled water accurately.
- Carefully add the distilled water to the container containing the 4 mL of 0.050 M HCl solution.
Step 5: Mix the solution thoroughly.
- Use a glass rod or a magnetic stirrer to ensure that the HCl and water are well mixed.
Step 6: Verify the concentration of the prepared HCl solution.
- Use a pH meter or titration to measure the concentration, if necessary.
That's it! You have successfully prepared 10 mL of 0.020 M HCl solution from a 0.050 M HCl solution. Remember to follow proper safety precautions while working with chemicals and always dispose of waste materials appropriately.
To prepare 10 mL of a 0.020 M hydrochloric acid (HCl) solution from a 0.050 M solution, here are the step-by-step instructions:
Step 1: Calculate the amount of the 0.050 M HCl solution you need. To do this, use the formula:
M1V1 = M2V2
M1 = initial concentration (0.050 M)
V1 = initial volume (unknown)
M2 = final concentration (0.020 M)
V2 = final volume (10 mL or 0.010 L)
Rearranging the equation to solve for V1:
V1 = (M2 * V2) / M1
V1 = (0.020 M * 0.010 L) / 0.050 M
V1 = 0.004 L or 4 mL
Therefore, you will need 4 mL of the 0.050 M HCl solution.
Step 2: Measure and transfer 4 mL of the 0.050 M HCl solution using a pipette or a graduated cylinder into a clean and dry container.
Step 3: Add distilled water to the container to bring the final volume up to 10 mL. This will dilute the solution while maintaining the desired concentration.
Step 4: Mix the solution thoroughly by gently swirling or stirring. Ensure the acid and water are well combined.
Step 5: Once the solution is prepared, you can now use it as desired in experiments, titrations, or any other purpose.
Please note that whenever you are handling chemicals, it is important to follow appropriate safety precautions and wear personal protective equipment, such as gloves and goggles. Additionally, accurate measuring tools, such as pipettes or graduated cylinders, should be used to ensure precise measurements.