Question

pre - lab 7 question 2 4.75 points
which situation would a serial dilution be most preferable to use than of a simple dilution?
a the dilution involves a very large change in concentration
b the dilution involves a very small change in concentration
c the dilution does not change the concentration

Explanation:

Serial dilution is a step - by - step dilution process. When there is a very large change in concentration required, simple dilution (a one - step process of adding solvent to a solution) may not be practical. For example, if you need to dilute a solution by a factor of \(10^{6}\), a simple dilution would require measuring a very small volume of the stock solution (which is error - prone) or a very large volume of the final solution. In serial dilution, we can do multiple smaller - scale dilutions (e.g., three 10 - fold dilutions: \(10\times10\times10 = 10^{3}\), and then another set of three 10 - fold dilutions to get \(10^{6}\)). Each step in serial dilution is more manageable in terms of volume measurements. A simple dilution is better for small changes in concentration. And if the dilution does not change the concentration, it is not really a dilution.

Answer:

A. the dilution involves a very large change in concentration