Assume you are starting with a 10x solution. how would you make it a 7.5x dilution?
What's a 10x solution? If that is 10 M, then you can make it 7.5 M by diluting it by a factor of 1.33.
To make a 7.5x dilution from a 10x solution, you will need to dilute the original solution by a specific factor. Here's how you can calculate and perform a 7.5x dilution:
1. Determine the dilution factor: Dilution factor is calculated as (final volume)/(initial volume). In this case, the final concentration is 7.5 times lower than the original concentration. Therefore, the dilution factor is 1/7.5 or 0.1333.
2. Calculate the required volumes: To achieve the desired dilution, you'll need to mix a specific amount of the original solution with a suitable solvent. Let's assume you are diluting 1 mL of the 10x solution.
- Volume of original solution needed: 1 mL x 0.1333 (dilution factor) = 0.1333 mL
- Volume of solvent needed: 1 mL - 0.1333 mL = 0.8667 mL
3. Add the calculated volumes: Take 0.1333 mL of the 10x solution and mix it with 0.8667 mL of the solvent to obtain a total volume of 1 mL.
Now you have successfully made a 7.5x dilution from the 10x solution by adding the correct volumes of solution and solvent.