Problem: If you were to do a 50% serial dilution, starting with a 10% concentration, how many dilutions would you have to make before getting 2.5% as your final concentration?

FREE Expert Solution

Simply put, a serial 50% dilution is a series of 50% dilutions, each resulting in half the preceding concentration. The formula below can simply be followed: 

This can be rearranged to get

The number of dilutions, n, can be computed using natural logarithm.

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Problem Details

If you were to do a 50% serial dilution, starting with a 10% concentration, how many dilutions would you have to make before getting 2.5% as your final concentration?